[TYPO3-core] RFC #10380: Update t3editor base (CodeMirror) to current release 0.60

[Tobias Liebig]

This is SVN patch request.

Type: Bugfix

Branches: trunk (4_3)

BT reference: http://bugs.typo3.org/view.php?id=10380


As you might know the t3editor is based on CodeMirror.

During the last couple of month the author of CodeMirror releases 
serveral new versions.

They include several bugfixes and some new features like
* bracket-matching-/highlighting (this was already implemented by the 
t3editor; this own implementation is obsolete now)
* interface/api to interact with the editors content (e.g. get current 
line/content, insert text at cursor position)
* several new parsers e.g. for CSS, mixed HTML/JS/CSS
* "dump-tabs", which will allow multiple idention (see #8398 )


The attached patch ...
* updates the codemirror javascript files
* cleans up some code
* raises the t3editor version number
* make use of the new api (e.g. when counting the lines)
* remove the obsolete code for checking matching brackets






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