Merge branch 'rs-remove-slim' into 'master'

Remove slim

Closes #2897 

See merge request !1537

Gemfile

@@ -128,7 +128,6 @@ gem 'after_commit_queue'
 gem 'acts-as-taggable-on', '~> 3.4'
 
 # Background jobs
-gem 'slim', '~> 2.0.2'
 gem 'sinatra', '~> 1.4.4', require: nil
 gem 'sidekiq', '3.3.0'
 gem 'sidetiq', '~> 0.6.3'

Gemfile.lock

@@ -672,9 +672,6 @@ GEM
       tilt (>= 1.3, < 3)
     six (0.2.0)
     slack-notifier (1.2.1)
-    slim (2.0.3)
-      temple (~> 0.6.6)
-      tilt (>= 1.3.3, < 2.1)
     slop (3.6.0)
     spinach (0.8.10)
       colorize
@@ -710,7 +707,6 @@ GEM
       railties (>= 3.2.5, < 5)
     teaspoon-jasmine (2.2.0)
       teaspoon (>= 1.0.0)
-    temple (0.6.10)
     term-ansicolor (1.3.2)
       tins (~> 1.0)
     terminal-table (1.5.2)
@@ -915,7 +911,6 @@ DEPENDENCIES
   sinatra (~> 1.4.4)
   six (~> 0.2.0)
   slack-notifier (~> 1.2.0)
-  slim (~> 2.0.2)
   spinach-rails (~> 0.2.1)
   spring (~> 1.3.6)
   spring-commands-rspec (~> 1.0.4)