Drop JQuery-UI. Fixes Issue #353 partly

Gemfile.lock

@@ -59,6 +59,8 @@ GEM
     bcrypt (3.1.7)
     bootstrap-sass (3.1.1.1)
       sass (~> 3.2)
+    bootstrap3-datetimepicker-rails (3.0.3)
+      momentjs-rails (>= 2.8.1)
     browser (0.6.0)
     builder (3.2.2)
     byebug (3.1.2)
@@ -158,7 +160,7 @@ GEM
       activesupport
       builder
     htmlentities (4.3.1)
-    i18n (0.6.9)
+    i18n (0.6.11)
     inversion (0.12.3)
       loggability (~> 0.4)
     jquery-fileupload-rails (0.4.1)
@@ -167,8 +169,6 @@ GEM
     jquery-rails (3.1.0)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    jquery-ui-rails (4.2.1)
-      railties (>= 3.2.16)
     json (1.8.1)
     jwt (1.0.0)
     launchy (2.4.2)
@@ -191,7 +191,9 @@ GEM
       open4
       rake
     mini_portile (0.6.0)
-    minitest (5.3.5)
+    minitest (5.4.0)
+    momentjs-rails (2.8.1)
+      railties (>= 3.1)
     multi_json (1.10.1)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
@@ -379,7 +381,7 @@ GEM
     ttfunk (1.1.1)
     turbolinks (2.2.2)
       coffee-rails
-    tzinfo (1.2.1)
+    tzinfo (1.2.2)
       thread_safe (~> 0.1)
     uglifier (2.5.0)
       execjs (>= 0.3.0)
@@ -407,6 +409,7 @@ DEPENDENCIES
   awesome_nested_set (~> 3.0.0.rc.5)
   axlsx_rails
   bootstrap-sass
+  bootstrap3-datetimepicker-rails (~> 3.0.2)
   byebug
   cancancan
   capybara
@@ -427,9 +430,9 @@ DEPENDENCIES
   hoptoad_notifier (~> 2.3)
   jquery-fileupload-rails
   jquery-rails
-  jquery-ui-rails
   letter_opener
   mina
+  momentjs-rails (>= 2.8.1)
   mysql2
   omniauth
   omniauth-facebook