Basic integration of VisualEditor and Oasis (editing and saving works, but there is a lot of bugs)

extensions/VisualEditor/ApiVisualEditor.php
* do not use proxy when calling Parsoid (noProxy = true)
* backward compatibility fix for getEditNotices (#back-compat)

extensions/VisualEditor/VisualEditor.hooks.php
* enable VisualEditor only in oasis skin (and not in vector, apex and mono book)
* load Wikia specific ViewPageTarget.init instead of MW one

extensions/VisualEditor/VisualEditor.i18n.php
* added visualeditor-ca-classiceditor (Classic editor) message

extensions/VisualEditor/VisualEditor.php
* removed dependency on mediawiki.notify which does not exists in MW 1.19.7 (#back-compat)

extensions/VisualEditor/modules/ve-mw/init/targets/ve.init.mw.ViewPageTarget.js
* call mw.Uri the way as it is expected in MW 1.19.7 (#back-compat)
* modify particular CSS selectors to match Oasis instead of Vector
* make property saveDialogTemplate inheritable
* comment out calls to not existing API mw.hook (#back-compat)

resources/jquery/jquery.client.js
* port this library from current MediaWiki master

skins/oasis/modules/PageHeaderController.class.php
* if ve-action exists as a content action display it as the main one in the article navigation drop down
Merge pull request #1386 from Wikia/VE-192

VE-192: Basic integration of VisualEditor and Oasis (Edit/Save)