speed up refreshDeps.sh by using gulp

All of the lines (except cleanup_css.sh which we don't really need anymore) in refreshDeps.sh are present in the gulp file.  I made a new gulp task dev-dependencies-and-build that combines the same ones as we had in refreshDeps.sh.  In my tests, this shaves about 10 seconds off the run time.

gulpfile.js

@@ -1230,6 +1230,29 @@ gulp.task('build',
     'build-changeGroup')
 );
 
+gulp.task('get-dependencies',
+  gulp.parallel(
+    'build-composer',
+    'build-npm-front-end'
+  )
+);
+
+gulp.task('dev-build',
+  gulp.parallel(
+    'sass',
+    'test-e2e-webdriver_update',
+    'test-e2e-compile',
+    'build-webpack'
+  )
+);
+
+gulp.task('dev-dependencies-and-build',
+  gulp.series(
+    'get-dependencies',
+    'dev-build'
+  )
+);
+
 // -------------------------------------
 //   Task: Build and Upload to destination
 // -------------------------------------

refreshDeps.sh

@@ -14,12 +14,5 @@ else
     APP_NAME="languageforge"
 fi
 
-npm install
-cd src
-composer install
-gulp test-e2e-webdriver_update
-../cleanup_css.sh
-gulp sass
-gulp build-webpack --applicationName $APP_NAME --doNoCompression true
-gulp test-e2e-compile
+gulp dev-dependencies-and-build --applicationName $APP_NAME --doNoCompression true
 echo -e "\n---------Finished refreshing npm, composer, webdriver, sass and webpack build----------"