Added CodeMirror 4.0.3
First stage of updates to CodeMirror 4
Updated less mode
Prevented CodeMirror from grabbing hotkeys in windows
Removed duplicated line
Added sublime support, fixed emacs, cleaned unnecessary files for addons.
Merge branch 'master' into feature/1297-codemirror-4
Remove consoles and comments
Merge pull request #1305 from jsbin/feature/1297-codemirror-4

#1297 CodeMirror 4