diff --git a/Gemfile b/Gemfile
index 7a4ec659..6a6486a6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,6 +7,7 @@ gem 'carrierwave'
 gem 'coffee-rails'
 gem 'concurrent-ruby'
 gem 'concurrent-ruby-ext', platform: :ruby
+gem 'activerecord-deprecated_finders', require: 'active_record/deprecated_finders'
 gem 'docker-api', require: 'docker'
 gem 'factory_bot_rails'
 gem 'forgery'
diff --git a/Gemfile.lock b/Gemfile.lock
index bf68e982..14913288 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -31,6 +31,7 @@ GEM
       activemodel (= 4.2.10)
       activesupport (= 4.2.10)
       arel (~> 6.0)
+    activerecord-deprecated_finders (1.0.4)
     activerecord-jdbc-adapter (1.3.19)
       activerecord (>= 2.2)
     activerecord-jdbcpostgresql-adapter (1.3.19)
@@ -385,6 +386,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  activerecord-deprecated_finders
   activerecord-jdbcpostgresql-adapter
   autotest-rails
   bcrypt
diff --git a/app/assets/stylesheets/editor.css.scss b/app/assets/stylesheets/editor.css.scss
index 755e3409..a38157b4 100644
--- a/app/assets/stylesheets/editor.css.scss
+++ b/app/assets/stylesheets/editor.css.scss
@@ -42,13 +42,14 @@ button i.fa-spin {
   background-color: #008CBA;
   margin-top: 0;
   width: 100%;
+  display: flex;
 
   button {
     font-size: 80%;
   }
 
   button, .btn-group {
-    width: 33.33333%;
+    flex-grow: 1;
   }
 
   .btn-group {
@@ -191,4 +192,4 @@ button i.fa-spin {
 
 .enforce-bottom-margin {
   margin-bottom: 5px !important;
-}
\ No newline at end of file
+}
diff --git a/app/assets/stylesheets/forms.css.scss b/app/assets/stylesheets/forms.css.scss
index 201b5841..69c1722c 100644
--- a/app/assets/stylesheets/forms.css.scss
+++ b/app/assets/stylesheets/forms.css.scss
@@ -3,7 +3,8 @@
 }
 
 .chosen-container {
-  width: 250px !important;
+  min-width: 250px !important;
+  width: 100% !important;
 }
 
 .code-field {
diff --git a/app/controllers/submissions_controller.rb b/app/controllers/submissions_controller.rb
index 3e24af1c..410c30cd 100644
--- a/app/controllers/submissions_controller.rb
+++ b/app/controllers/submissions_controller.rb
@@ -75,6 +75,11 @@ class SubmissionsController < ApplicationController
         zio.write(file.content)
       end
 
+      # zip exercise description
+      zio.put_next_entry(t('activerecord.models.exercise.one') + '.txt')
+      zio.write(@submission.exercise.title + "\r\n======================\r\n")
+      zio.write(@submission.exercise.description)
+
       # zip .co file
       zio.put_next_entry(".co")
       zio.write(File.read id_file)
@@ -167,7 +172,7 @@ class SubmissionsController < ApplicationController
           # if the command is 'client_kill', send it to docker otherwise.
           begin
             parsed = JSON.parse(data)
-            if parsed['cmd'] == 'client_kill'
+            if parsed.class == Hash && parsed['cmd'] == 'client_kill'
               Rails.logger.debug("Client exited container.")
               @docker_client.kill_container(result[:container])
             else
diff --git a/app/views/sessions/destroy_through_lti.html.slim b/app/views/sessions/destroy_through_lti.html.slim
index 3e55e0fc..d33ced8d 100644
--- a/app/views/sessions/destroy_through_lti.html.slim
+++ b/app/views/sessions/destroy_through_lti.html.slim
@@ -10,7 +10,7 @@ h2 = t('shared.statistics')
 = row(label: '.score') do
   p == t('shared.out_of', maximum_value: @submission.exercise.maximum_score, value: @submission.score)
   p = progress_bar(@submission.percentage)
-= row(label: '.final_submissions', value: @submission.exercise.submissions.final.distinct.count(:user_id, :user_type) - 1)
+/= row(label: '.final_submissions', value: @submission.exercise.submissions.final.distinct.count(:user_id, :user_type) - 1)
 /= row(label: '.average_score') do
 /  p == t('shared.out_of', maximum_value: @submission.exercise.maximum_score, value: @submission.exercise.average_score.round(2))
 /  p = progress_bar(@submission.exercise.average_percentage)
diff --git a/db/migrate/20160630154310_add_submission_to_request_for_comments.rb b/db/migrate/20160630154310_add_submission_to_request_for_comments.rb
index d7d13e67..a532bcf9 100644
--- a/db/migrate/20160630154310_add_submission_to_request_for_comments.rb
+++ b/db/migrate/20160630154310_add_submission_to_request_for_comments.rb
@@ -3,3 +3,31 @@ class AddSubmissionToRequestForComments < ActiveRecord::Migration
     add_reference :request_for_comments, :submission
   end
 end
+
+=begin
+We issued the following on the database to add the submission_ids for existing entries
+
+UPDATE request_for_comments
+SET submission_id = sub.submission_id_external
+FROM
+(SELECT s.id AS submission_id_external,
+                rfc.id AS rfc_id,
+                          s.created_at AS submission_created_at,
+                                          rfc.created_at AS rfc_created_at
+FROM submissions s,
+                 request_for_comments rfc
+WHERE s.user_id = rfc.user_id
+AND s.exercise_id = rfc.exercise_id
+AND rfc.created_at + interval '2 hours' > s.created_at
+AND s.created_at =
+        (SELECT MAX(created_at)
+        FROM submissions
+        WHERE exercise_id = s.exercise_id
+        AND user_id = s.user_id
+        AND rfc.created_at + interval '2 hours' > created_at
+        GROUP BY s.exercise_id,
+                 s.user_id)) as sub
+WHERE id = sub.rfc_id
+AND submission_id IS NULL;
+
+=end