diff --git a/app/assets/javascripts/editor/editor.js.erb b/app/assets/javascripts/editor/editor.js.erb
index 8b3db444..50e14514 100644
--- a/app/assets/javascripts/editor/editor.js.erb
+++ b/app/assets/javascripts/editor/editor.js.erb
@@ -351,7 +351,7 @@ configureEditors: function () {
   },
 
   isBrowserSupported: function () {
-    //  websockets is used for run, score and test
+    //  websockets are used for run, score and test
     return Modernizr.websockets;
   },
 
@@ -361,7 +361,7 @@ configureEditors: function () {
     panel.find('.panel-title .number').text(index + 1);
     panel.find('.row .col-sm-9').eq(0).find('.number').eq(0).text(result.passed);
     panel.find('.row .col-sm-9').eq(0).find('.number').eq(1).text(result.count);
-    panel.find('.row .col-sm-9').eq(1).find('.number').eq(0).text((result.score * result.weight).toFixed(2));
+    panel.find('.row .col-sm-9').eq(1).find('.number').eq(0).text(parseFloat((result.score * result.weight).toFixed(2)));
     panel.find('.row .col-sm-9').eq(1).find('.number').eq(1).text(result.weight);
     panel.find('.row .col-sm-9').eq(2).text(result.message);
     if (result.error_messages) panel.find('.row .col-sm-9').eq(3).text(result.error_messages.join(', '));
diff --git a/app/assets/javascripts/editor/evaluation.js.erb b/app/assets/javascripts/editor/evaluation.js.erb
index f7b51f30..e4182413 100644
--- a/app/assets/javascripts/editor/evaluation.js.erb
+++ b/app/assets/javascripts/editor/evaluation.js.erb
@@ -6,6 +6,7 @@ CodeOceanEditorEvaluation = {
    */
   scoreCode: function (event) {
     event.preventDefault();
+    this.clearScoringOutput();
     this.createSubmission('#assess', null, function (response) {
       this.showSpinner($('#assess'));
       $('#score_div').removeClass('hidden');
@@ -139,6 +140,14 @@ CodeOceanEditorEvaluation = {
     $('#output pre').remove();
   },
 
+  clearScoringOutput: function() {
+    $('#results ul').first().html('');
+    $('.test-count .number').html(0);
+    $('#score').data('score', 0);
+    this.renderScore();
+    this.clearOutput();
+  },
+
   printOutput: function (output, colorize, index) {
     var element = this.findOrCreateOutputElement(index);
     if (!colorize) {
diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 9668e430..e1ada974 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -265,7 +265,7 @@ class ExercisesController < ApplicationController
           return
 
         # else: show open rfc for same exercise if available
-        elsif rfc = RequestForComment.unsolved.where(exercise_id: @submission.exercise).order("RANDOM()").first
+        elsif rfc = RequestForComment.unsolved.where(exercise_id: @submission.exercise).where.not(question: nil).order("RANDOM()").first
           # set a message that informs the user that his score was perfect and help in RFC is greatly appreciated.
           flash[:notice] = I18n.t('exercises.submit.full_score_redirect_to_rfc')
           flash.keep(:notice)
diff --git a/app/views/request_for_comments/show.html.erb b/app/views/request_for_comments/show.html.erb
index 5ad78b58..d0fe31af 100644
--- a/app/views/request_for_comments/show.html.erb
+++ b/app/views/request_for_comments/show.html.erb
@@ -6,7 +6,9 @@
         submission =  @request_for_comment.submission
       %>
     <%= user.displayname %> | <%= @request_for_comment.created_at.localtime %>
+
   </p>
+
   <h5>
     <u><%= t('activerecord.attributes.exercise.description') %>:</u> <%= render_markdown(@request_for_comment.exercise.description) %>
   </h5>
@@ -25,6 +27,20 @@
   <% else %>
 
   <% end %>
+
+  <% if @current_user.admin?  && user.is_a?(ExternalUser) %>
+      <br>
+      <br>
+      <h4>Admin Menu</h4>
+      <h5>
+        <ul>
+          <li><%= link_to "User's current status of this exercise", statistics_external_user_exercise_path(id: @request_for_comment.exercise_id, external_user_id: @request_for_comment.user_id) %></li>
+          <li><%= link_to "All exercises of this user", statistics_external_user_path(id: @request_for_comment.user_id) %></li> <br>
+          <li><%= link_to "Implement the exercise yourself", implement_exercise_path(id: @request_for_comment.exercise_id) %> </li>
+          <li><%= link_to "Show the exercise", exercise_path(id: @request_for_comment.exercise_id) %> </li>
+        </ul>
+      </h5>
+  <% end %>
 </div>
 
 <!--
diff --git a/config/environments/staging.rb b/config/environments/staging.rb
index dfe8cefb..ca1a98bb 100644
--- a/config/environments/staging.rb
+++ b/config/environments/staging.rb
@@ -1,14 +1,17 @@
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
-  # Code is not reloaded between requests.
-  config.cache_classes = true
+  # true: Code is not reloaded between requests.
+  # false:   In the development environment your application's code is reloaded on
+  #          every request. This slows down response time but is perfect for development
+  #          since you don't have to restart the web server when you make code changes.
+  config.cache_classes = false
 
-  # Eager load code on boot. This eager loads most of Rails and
-  # your application in memory, allowing both threaded web servers
-  # and those relying on copy on write to perform better.
-  # Rake tasks automatically ignore this option for performance.
-  config.eager_load = true
+  # true: Eager load code on boot. This eager loads most of Rails and
+  #       your application in memory, allowing both threaded web servers
+  #       and those relying on copy on write to perform better.
+  #       Rake tasks automatically ignore this option for performance.
+  config.eager_load = false
 
   #enable web console in staging
   config.web_console.development_only = false
@@ -17,6 +20,17 @@ Rails.application.configure do
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false
 
+  # Raise an error on page load if there are pending migrations.
+  config.active_record.migration_error = :page_load
+
+  # Adds additional error checking when serving assets at runtime.
+  # Checks for improperly declared sprockets dependencies.
+  # Raises helpful error messages.
+  config.assets.raise_runtime_errors = true
+
+  # Raise errors for missing translations.
+  config.action_view.raise_on_missing_translations = true
+
   # Enable Rack::Cache to put a simple HTTP cache in front of your application
   # Add `rack-cache` to your Gemfile before enabling this.
   # For large-scale production use, consider using a caching reverse proxy like nginx, varnish or squid.