Update TinyMCE library to 3.5.11

Testing this now. The good news is the cirkuit patch still applies with the 3.5.11 release.

I've done initial testing and all looks well. We haven't had many reports on IE11 users having bugs specifically with TinyMCE but other areas. I think nipping them ahead of time would be great.

Copy + paste of changelog since 3.5.8 for quick review.

Version 3.5.11 (2014-05-08)
	Fixed bug in paste plugin word import with lists that have strikethrough on numbers.
	Fixed bug in word count plugin where characters with diacritical marks were split as seperate words.
	Fixed bug in IE 11 where the selection of images would fail when they where at the end of blocks.
Version 3.5.10 (2013-10-24)
	Fixed bug where dialogs using inlinepopups plugin would display incorrectly sometimes
	Fixed bug in paste plugin word import that was removing type from lists
	Fixed bug where IE 11 wouldn't be properly detected if IE 10 emulation was enabled.
Version 3.5.9 (2013-10-10)
	Added IE 11 compatibility. IE 11 is treated as Gecko but it has still many IE bugs.
	Fixed bug where importing CSS classes would fail if it contained @import rules to remote domain on Gecko.
	Fixed bug in spelling plugin where misspelt words are not always marked.
	Fixed bug where script tag was removed when nested inside a div or p.
	Fixed full screen plugin state migration from original editor.
	Fixed edgecase on up/down arrow keys scrolling with native lists.
	Fixed bug where space can scroll webpage when using keyboard to access toolbar buttons.
	Fixed bug where up/down arrow keys scroll entire webpage when using keyboard nav in menu ui.
	Fixed bug where applying ins/del as inline elements would apply them as blocks.
	Fixed bug where backspace on a space after an image would produce a BR on WebKit.
	Fixed bug where it wasn't possible to change block type of text blocks.