diff --git a/server/package-lock.json b/server/package-lock.json
old mode 100755
new mode 100644
index f69e0ac..56f2455
--- a/server/package-lock.json
+++ b/server/package-lock.json
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-      "integrity": "sha512-ivSoxqBGYOqQVruxD35+EyCFDYNEFL/Uo6FcOnz+9xZdZzK0Zzw4r4KhbrME1Oo2gOggwJod2MnsdamSG7H9ig==",
-      "requires": {
-        "cliui": "4.0.0",
-        "decamelize": "1.2.0",
-        "find-up": "2.1.0",
-        "get-caller-file": "1.0.2",
-        "os-locale": "2.1.0",
-        "require-directory": "2.1.1",
-        "require-main-filename": "1.0.1",
-        "set-blocking": "2.0.0",
-        "string-width": "2.1.1",
-        "which-module": "2.0.0",
-        "y18n": "3.2.1",
-        "yargs-parser": "8.1.0"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
-          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg="
-        },
-        "cliui": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.0.0.tgz",
-          "integrity": "sha512-nY3W5Gu2racvdDk//ELReY+dHjb9PlIcVDFXP72nVIhq2Gy3LuVXYwJoPVudwQnv1shtohpgkdCKT2YaKY0CKw==",
-          "requires": {
-            "string-width": "2.1.1",
-            "strip-ansi": "4.0.0",
-            "wrap-ansi": "2.1.0"
-          }
-        },
-        "strip-ansi": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
-          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
-          "requires": {
-            "ansi-regex": "3.0.0"
-          }
-        }
-      }
-    },
-    "yargs-parser": {
-      "version": "8.1.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-8.1.0.tgz",
-      "integrity": "sha512-yP+6QqN8BmrgW2ggLtTbdrOyBNSI7zBa4IykmiV5R1wl1JWNxQvWhMfMdmzIYtKU7oP3OOInY/tl2ov3BDjnJQ==",
-      "requires": {
-        "camelcase": "4.1.0"
-      },
-      "dependencies": {
-        "camelcase": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
-          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0="
-        }
-      }
-    },
-    "yauzl": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.4.1.tgz",
-      "integrity": "sha1-lSj0QtqxsihOWLQ3m7GU4i4MQAU=",
-      "requires": {
-        "fd-slicer": "1.0.1"
-      }
     }
   }
 }
diff --git a/server/package.json b/server/package.json
old mode 100755
new mode 100644
index 9f8c18c..62d7d85
--- a/server/package.json
+++ b/server/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
     "body-parser": "^1.17.2",
     "express": "^4.15.3",
-    "mongoose": "^4.11.1",
+    "mongoose": "^5.7.5",
     "nodemon": "^1.11.0",
     "path-parser": "^2.0.2",
     "redis": "^2.8.0",
diff --git a/server/yarn.lock b/server/yarn.lock
index b6aae70..58354f0 100644
--- a/server/yarn.lock
+++ b/server/yarn.lock
@@ -98,12 +98,6 @@ async-each@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.1.tgz#19d386a1d9edc6e7c1c85d388aedbcc56d33602d"
 
-async@2.1.4:
-  version "2.1.4"
-  resolved "https://registry.yarnpkg.com/async/-/async-2.1.4.tgz#2d2160c7788032e4dd6cbe2502f1f9a2c8f6cde4"
-  dependencies:
-    lodash "^4.14.0"
-
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
@@ -152,9 +146,10 @@ block-stream@*:
   dependencies:
     inherits "~2.0.0"
 
-bluebird@3.5.0:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.0.tgz#791420d7f551eea2897453a8a77653f96606d67c"
+bluebird@3.5.1:
+  version "3.5.1"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
+  integrity sha512-MKiLiV+I1AA596t9w1sQJ8jkiSr5+ZKi0WKrYGUn6d1Fx+Ij4tIj+m2WMQSGczs5jZVxV339chE8iwk6F64wjA==
 
 body-parser@1.18.2, body-parser@^1.17.2:
   version "1.18.2"
@@ -213,9 +208,10 @@ braces@^2.3.0, braces@^2.3.1:
     split-string "^3.0.2"
     to-regex "^3.0.1"
 
-bson@~1.0.4:
-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/bson/-/bson-1.0.6.tgz#444db59ddd4c24f0cb063aabdc5c8c7b0ceca912"
+bson@^1.1.1, bson@~1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/bson/-/bson-1.1.1.tgz#4330f5e99104c4e751e7351859e2d408279f2f13"
+  integrity sha512-jCGVYLoYMHDkOsbwJZBCqwMHyH4c+wzgI9hG7Z6SZJRXWr+x58pdIbm2i9a/jFGCkRJqRUr8eoI7lDWa0hTkxg==
 
 buffer-shims@~1.0.0:
   version "1.0.0"
@@ -404,7 +400,7 @@ debug@2.6.9, debug@^2.2.0, debug@^2.3.3:
   dependencies:
     ms "2.0.0"
 
-debug@^3.1.0:
+debug@3.1.0, debug@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
   dependencies:
@@ -494,10 +490,6 @@ encodeurl@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
 
-es6-promise@3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-3.2.1.tgz#ec56233868032909207170c39448e24449dd1fc4"
-
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -512,7 +504,7 @@ etag@~1.8.1:
 
 event-stream@~3.3.0:
   version "3.3.4"
-  resolved "http://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
+  resolved "https://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
   dependencies:
     duplexer "~0.1.1"
     from "~0"
@@ -828,10 +820,6 @@ hoek@2.x.x:
   version "2.16.3"
   resolved "https://registry.yarnpkg.com/hoek/-/hoek-2.16.3.tgz#20bb7403d3cea398e91dc4710a8ff1b8274a25ed"
 
-hooks-fixed@2.0.2:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/hooks-fixed/-/hooks-fixed-2.0.2.tgz#20076daa07e77d8a6106883ce3f1722e051140b0"
-
 http-errors@1.6.2, http-errors@~1.6.2:
   version "1.6.2"
   resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.6.2.tgz#0a002cc85707192a7e7946ceedc11155f60ec736"
@@ -1086,9 +1074,10 @@ jsprim@^1.2.2:
     json-schema "0.2.3"
     verror "1.10.0"
 
-kareem@1.5.0:
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/kareem/-/kareem-1.5.0.tgz#e3e4101d9dcfde299769daf4b4db64d895d17448"
+kareem@2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/kareem/-/kareem-2.3.1.tgz#def12d9c941017fabfb00f873af95e9c99e1be87"
+  integrity sha512-l3hLhffs9zqoDe8zjmb/mAN4B8VT3L56EUvKNqLFVs9YlFA+zx7ke1DO8STAdDyYNkeSo1nKmjuvQeI12So8Xw==
 
 kind-of@^3.0.2, kind-of@^3.0.3, kind-of@^3.2.0:
   version "3.2.2"
@@ -1116,14 +1105,6 @@ latest-version@^3.0.0:
   dependencies:
     package-json "^4.0.0"
 
-lodash.get@4.4.2:
-  version "4.4.2"
-  resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
-
-lodash@^4.14.0:
-  version "4.17.5"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
-
 lowercase-keys@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/lowercase-keys/-/lowercase-keys-1.0.1.tgz#6f9e30b47084d971a7c820ff15a6c5167b74c26f"
@@ -1226,63 +1207,61 @@ mixin-deep@^1.2.0:
   dependencies:
     minimist "0.0.8"
 
-mongodb-core@2.1.18:
-  version "2.1.18"
-  resolved "https://registry.yarnpkg.com/mongodb-core/-/mongodb-core-2.1.18.tgz#4c46139bdf3a1f032ded91db49f38eec01659050"
-  dependencies:
-    bson "~1.0.4"
-    require_optional "~1.0.0"
-
-mongodb@2.2.34:
-  version "2.2.34"
-  resolved "https://registry.yarnpkg.com/mongodb/-/mongodb-2.2.34.tgz#a34f59bbeb61754aec432de72c3fe21526a44c1a"
-  dependencies:
-    es6-promise "3.2.1"
-    mongodb-core "2.1.18"
-    readable-stream "2.2.7"
-
-mongoose@^4.11.1:
-  version "4.13.12"
-  resolved "https://registry.yarnpkg.com/mongoose/-/mongoose-4.13.12.tgz#8eb2bb9c820391cc524540950a8eb5f0992f1e8b"
-  dependencies:
-    async "2.1.4"
-    bson "~1.0.4"
-    hooks-fixed "2.0.2"
-    kareem "1.5.0"
-    lodash.get "4.4.2"
-    mongodb "2.2.34"
-    mpath "0.3.0"
-    mpromise "0.5.5"
-    mquery "2.3.3"
-    ms "2.0.0"
-    muri "1.3.0"
-    regexp-clone "0.0.1"
-    sliced "1.0.1"
+mongodb@3.3.2:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/mongodb/-/mongodb-3.3.2.tgz#ff086b5f552cf07e24ce098694210f3d42d668b2"
+  integrity sha512-fqJt3iywelk4yKu/lfwQg163Bjpo5zDKhXiohycvon4iQHbrfflSAz9AIlRE6496Pm/dQKQK5bMigdVo2s6gBg==
+  dependencies:
+    bson "^1.1.1"
+    require_optional "^1.0.1"
+    safe-buffer "^5.1.2"
 
-mpath@0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/mpath/-/mpath-0.3.0.tgz#7a58f789e9b5fd3c94520634157960f26bd5ef44"
+mongoose-legacy-pluralize@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/mongoose-legacy-pluralize/-/mongoose-legacy-pluralize-1.0.2.tgz#3ba9f91fa507b5186d399fb40854bff18fb563e4"
+  integrity sha512-Yo/7qQU4/EyIS8YDFSeenIvXxZN+ld7YdV9LqFVQJzTLye8unujAWPZ4NWKfFA+RNjh+wvTWKY9Z3E5XM6ZZiQ==
+
+mongoose@^5.7.5:
+  version "5.7.5"
+  resolved "https://registry.yarnpkg.com/mongoose/-/mongoose-5.7.5.tgz#b787b47216edf62036aa358c3ef0f1869c46cdc2"
+  integrity sha512-BZ4FxtnbTurc/wcm/hLltLdI4IDxo4nsE0D9q58YymTdZwreNzwO62CcjVtaHhmr8HmJtOInp2W/T12FZaMf8g==
+  dependencies:
+    bson "~1.1.1"
+    kareem "2.3.1"
+    mongodb "3.3.2"
+    mongoose-legacy-pluralize "1.0.2"
+    mpath "0.6.0"
+    mquery "3.2.2"
+    ms "2.1.2"
+    regexp-clone "1.0.0"
+    safe-buffer "5.1.2"
+    sift "7.0.1"
+    sliced "1.0.1"
 
-mpromise@0.5.5:
-  version "0.5.5"
-  resolved "https://registry.yarnpkg.com/mpromise/-/mpromise-0.5.5.tgz#f5b24259d763acc2257b0a0c8c6d866fd51732e6"
+mpath@0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/mpath/-/mpath-0.6.0.tgz#aa922029fca4f0f641f360e74c5c1b6a4c47078e"
+  integrity sha512-i75qh79MJ5Xo/sbhxrDrPSEG0H/mr1kcZXJ8dH6URU5jD/knFxCVqVC/gVSW7GIXL/9hHWlT9haLbCXWOll3qw==
 
-mquery@2.3.3:
-  version "2.3.3"
-  resolved "https://registry.yarnpkg.com/mquery/-/mquery-2.3.3.tgz#221412e5d4e7290ca5582dd16ea8f190a506b518"
+mquery@3.2.2:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/mquery/-/mquery-3.2.2.tgz#e1383a3951852ce23e37f619a9b350f1fb3664e7"
+  integrity sha512-XB52992COp0KP230I3qloVUbkLUxJIu328HBP2t2EsxSFtf4W1HPSOBWOXf1bqxK4Xbb66lfMJ+Bpfd9/yZE1Q==
   dependencies:
-    bluebird "3.5.0"
-    debug "2.6.9"
-    regexp-clone "0.0.1"
-    sliced "0.0.5"
+    bluebird "3.5.1"
+    debug "3.1.0"
+    regexp-clone "^1.0.0"
+    safe-buffer "5.1.2"
+    sliced "1.0.1"
 
 ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
-muri@1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/muri/-/muri-1.3.0.tgz#aeccf3db64c56aa7c5b34e00f95b7878527a4721"
+ms@2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+  integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
 nan@^2.3.0:
   version "2.10.0"
@@ -1563,7 +1542,7 @@ rc@^1.0.1, rc@^1.1.6, rc@^1.1.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
-readable-stream@2.2.7, readable-stream@^2.0.2, readable-stream@^2.0.6, readable-stream@^2.1.4:
+readable-stream@^2.0.2, readable-stream@^2.0.6, readable-stream@^2.1.4:
   version "2.2.7"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.2.7.tgz#07057acbe2467b22042d36f98c5ad507054e95b1"
   dependencies:
@@ -1610,9 +1589,10 @@ regex-not@^1.0.0, regex-not@^1.0.2:
     extend-shallow "^3.0.2"
     safe-regex "^1.1.0"
 
-regexp-clone@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/regexp-clone/-/regexp-clone-0.0.1.tgz#a7c2e09891fdbf38fbb10d376fb73003e68ac589"
+regexp-clone@1.0.0, regexp-clone@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/regexp-clone/-/regexp-clone-1.0.0.tgz#222db967623277056260b992626354a04ce9bf63"
+  integrity sha512-TuAasHQNamyyJ2hb97IuBEif4qBHGjPHBS64sZwytpLEqtBQ1gPJTnOaQ6qmpET16cK14kkjbazl6+p0RRv0yw==
 
 registry-auth-token@^3.0.1:
   version "3.3.2"
@@ -1666,9 +1646,10 @@ request@2.81.0:
     tunnel-agent "^0.6.0"
     uuid "^3.0.0"
 
-require_optional@~1.0.0:
+require_optional@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/require_optional/-/require_optional-1.0.1.tgz#4cf35a4247f64ca3df8c2ef208cc494b1ca8fc2e"
+  integrity sha512-qhM/y57enGWHAe3v/NcwML6a3/vfESLe/sGM2dII+gEO0BpKRUkWZow/tyloNqJyN6kXSl3RyyM8Ll5D/sJP8g==
   dependencies:
     resolve-from "^2.0.0"
     semver "^5.1.0"
@@ -1691,10 +1672,20 @@ rimraf@2, rimraf@^2.5.1, rimraf@^2.6.1:
   dependencies:
     glob "^7.0.5"
 
-safe-buffer@5.1.1, safe-buffer@^5.0.1, safe-buffer@~5.1.0:
+safe-buffer@5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
+safe-buffer@5.1.2, safe-buffer@~5.1.0:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+safe-buffer@^5.0.1, safe-buffer@^5.1.2:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.0.tgz#b74daec49b1148f88c64b68d49b1e815c1f2f519"
+  integrity sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg==
+
 safe-regex@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/safe-regex/-/safe-regex-1.1.0.tgz#40a3669f3b077d1e943d44629e157dd48023bf2e"
@@ -1790,14 +1781,15 @@ shortid@^2.2.8:
   version "2.2.8"
   resolved "https://registry.yarnpkg.com/shortid/-/shortid-2.2.8.tgz#033b117d6a2e975804f6f0969dbe7d3d0b355131"
 
+sift@7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/sift/-/sift-7.0.1.tgz#47d62c50b159d316f1372f8b53f9c10cd21a4b08"
+  integrity sha512-oqD7PMJ+uO6jV9EQCl0LrRw1OwsiPsiFQR5AR30heR+4Dl7jBBbDLnNvWiak20tzZlSE1H7RB30SX/1j/YYT7g==
+
 signal-exit@^3.0.0, signal-exit@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
 
-sliced@0.0.5:
-  version "0.0.5"
-  resolved "https://registry.yarnpkg.com/sliced/-/sliced-0.0.5.tgz#5edc044ca4eb6f7816d50ba2fc63e25d8fe4707f"
-
 sliced@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/sliced/-/sliced-1.0.1.tgz#0b3a662b5d04c3177b1926bea82b03f837a2ef41"