Enable CacheMarkdownField for the remaining models

This commit alters views for the following models to use the markdown cache if
present:

* AbuseReport
* Appearance
* ApplicationSetting
* BroadcastMessage
* Group
* Issue
* Label
* MergeRequest
* Milestone
* Project

At the same time, calls to `escape_once` have been moved into the `single_line`
Banzai pipeline, so they can't be missed out by accident and the work is done
at save, rather than render, time.

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/helpers/broadcast_messages_helper_spec.rb b/spec/helpers/broadcast_messages_helper_spec.rb
index 157cc4665a2..c6e3c5c2368 100644
--- a/spec/helpers/broadcast_messages_helper_spec.rb
+++ b/spec/helpers/broadcast_messages_helper_spec.rb
@@ -7,7 +7,7 @@ describe BroadcastMessagesHelper do
     end
 
     it 'includes the current message' do
-      current = double(message: 'Current Message')
+      current = BroadcastMessage.new(message: 'Current Message')
 
       allow(helper).to receive(:broadcast_message_style).and_return(nil)
 
@@ -15,7 +15,7 @@ describe BroadcastMessagesHelper do
     end
 
     it 'includes custom style' do
-      current = double(message: 'Current Message')
+      current = BroadcastMessage.new(message: 'Current Message')
 
       allow(helper).to receive(:broadcast_message_style).and_return('foo')