Adds changelog entry, changes RemoteMirror#sync? to be semantically sound and remove reference to pull mirrors in view

app/models/remote_mirror.rb

@@ -87,11 +87,11 @@ class RemoteMirror < ActiveRecord::Base
   end
 
   def sync?
-    !enabled?
+    enabled?
   end
 
   def sync
-    return if sync?
+    return unless sync?
 
     if recently_scheduled?
       RepositoryUpdateRemoteMirrorWorker.perform_in(backoff_delay, self.id, Time.now)

app/views/admin/application_settings/show.html.haml

@@ -321,6 +321,6 @@
     %button.btn.js-settings-toggle{ type: 'button' }
       = expanded ? 'Collapse' : 'Expand'
     %p
-      = _('Configure push and pull mirrors.')
+      = _('Configure push mirrors.')
   .settings-content
     = render partial: 'repository_mirrors_form'

changelogs/unreleased/42099-port-push-mirroring-to-ce-ce-port-v-2.yml

@@ -0,0 +1,5 @@
+---
+title: Adds push mirrors to GitLab Community Edition
+merge_request: 18715
+author:
+type: changed