VE-1074 Use LinkSuggest extension in VisualEditor's source dialog
VE-1074 Changes from code review
VE-1074 Remove double jQuery, add comments and new variable
VE-1074 Move LinkSuggest setup to dialog initialization
Merge pull request #4380 from Wikia/VE-1074

VE-1074 Use LinkSuggest extension in VisualEditor's source dialog