Some fixes

Author: Yuma Soga

Gemfile.lock

@@ -129,6 +129,8 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
+    jquery-ui-rails (6.0.1)
+      railties (>= 3.2.16)
     json (1.8.6)
     jwt (1.5.6)
     launchy (2.4.3)
@@ -335,6 +337,7 @@ DEPENDENCIES
   haml-rails
   jbuilder (~> 2.0)
   jquery-rails
+  jquery-ui-rails
   listen
   omniauth-slack
   pg