VE-1541: Build the preference info dialog
VE-1541: Using correct message
VE-1541: Make mergeable
VE-1541: Pass surface when opening window
VE-1541: Retina quality graphic
Merge branch 've-sprint-27' into VE-1541

Conflicts:
	extensions/VisualEditor/wikia/VisualEditor.i18n.php
	extensions/VisualEditor/wikia/VisualEditor.php
VE-1541: Oof, fixing conflict
Merge pull request #4817 from Wikia/VE-1541

VE-1541: Build the preference info dialog