Implemented the CodeMirror code editor for the codetext area.

Yea, the CodeMirror text editor works, and it is beautiful. jQuery-ACE
didn’t work for me. It has a terrible time integrating in my bootstrap
textarea framework.
Added the CodeMirror placeholder addon. Works great!
Added "Snip It" button to non-owned snippets
Can update snippets using the CodeMirror editor.

NEXT: Get the description field using CodeMirror
Got snippet description using CodeMirror editor
Merge branch 'CodeMirror-integration'
Fixed minor UI snippet form issues
Merge branch 'CodeMirror-integration'