jQuery, Impromptu and Validator updates

Also removed unneeded file.
Impromptu, jGrowl updates
Select2 update
jQuery Modal update
CodeMirror update
jQuery UI update
Adds AJAX to Security questions #894
Add missing smilies https://github.com/mybb/mybb/issues/908

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Adds refresh to #894 AJAX Security Questions

#894
missing language var #894

#894
Merge pull request #962 from PirataNervo/feature-894

Adds AJAX to Security questions #894
Trying to fix conflicts
Trying to fix conflicts again
Putting back changes
Fixing impromptu conflicts
Fixing jgrowl conflicts
Merge pull request #958 from PirataNervo/feature-957

Update 3rd party libs #957
New jGrowl and Impromptu CSS
Merge pull request #969 from PirataNervo/feature-957

New jGrowl and Impromptu CSS #957
Feature #280 Smilies/Post Icons and theme imgdir
Fixed path and bug in smilies