VE-1555: Do not "double fire" tracking for performance.system.activation/edit-page-ready

Use "wikitext" property on target object as a flag to figure out if it's "initial" load of VE (then track event) or subsequent (then do not track event)

https://wikia-inc.atlassian.net/browse/VE-1555
Merge pull request #4905 from Wikia/VE-1555

VE-1555: Do not "double fire" tracking for performance.system.activation/edit-page-ready
VE-1489: All todos from JS files
VE-1489: Keep CSS modifications in place
VE-1580: Reduce margin for Windows scrollbars
VE-1533: Check hasOwnProperty for typeToRdfa
Merge pull request #4951 from Wikia/VE-1580

VE-1580: Reduce margin for Windows scrollbars
VE-1533: Adding clarification
Merge pull request #4955 from Wikia/VE-1533

VE-1533: Check hasOwnProperty for typeToRdfa
VE-1533: English is hard
Merge pull request #4960 from Wikia/VE-1533

VE-1533: English is hard
VE-1472: Source dialog works independent of LinkSuggest
VE-1472: Coerse string to boolean
VE-1489: Return jqXHR without creating local variable
Merge pull request #4961 from Wikia/VE-1472

VE-1472: Source dialog works independent of LinkSuggest
Merge pull request #4949 from Wikia/VE-1489

VE-1489: Cleanup from sprint 25
fix-tests: Specify correct paths to i18n files
Merge pull request #4987 from Wikia/fix-tests

fix-tests: Specify correct paths to i18n files
VE-1551: Removed "Recently edited" sort functionality n from Category Exhibition

Along with removing the option from the UI method (getRecentlyEdited) used for getting data from database was removed as well.
Reason for removing is that query is not performant (temporary table and filesort is being used) but also functionality is not popular/important enough to fix it.

https://wikia-inc.atlassian.net/browse/VE-1551
Merge branch 'dev' into ve-sprint-28

Conflicts:
	extensions/VisualEditor/wikia/modules/ve/ui/dialogs/ve.ui.WikiaTemplateInsertDialog.js