linagora/esn-frontend-calendar#174 downgrade ng-tags-input package fr…

…om 3.2.0 to 3.0.0

From the version that greater than 3.1.0, ngTagsInput does not support AngularJS version 1.3.20

The breaking change at https://github.com/mbenford/ngTagsInput/blob/v3.2.0/src/auto-complete.js\#L211-L214

package.json

@@ -61,7 +61,7 @@
     "mdi": "2.0.46",
     "moment": "2.15.1",
     "moment-timezone": "0.5.17",
-    "ng-tags-input": "3.2.0",
+    "ng-tags-input": "3.0.0",
     "openpaas-auth-client": "github:openpaas-suite/openpaas-auth-client#main",
     "re-tree": "0.0.2",
     "restangular": "1.6.1",