Excluded some tests from older IE versions.
Fixed bug where iOS 7.1 Safari would open linked when images where inserted into links.
Forced inside wrap-iife in eslint.
Fixed issue where the UndoManager transact method couldn't be nested since it only had one lock.
Added title input field to link dialog for a11y reasons can be disabled by using the link_title option.
Cleaned up some code in EditorManager.js