Enhancement request - update to ace editor

[bsurnida]

Any chance we can update the editor to use the ACE editor https://ace.c9.io/ ACE is a powerful editor and gets most of the features that you get in brackets or atom like code folding and error highlighting.

[bsurnida]

Here is a list of features provided by ACE editor.

Syntax highlighting for over 110 languages (TextMate/Sublime Text.tmlanguage files can be imported) Over 20 themes (TextMate/Sublime Text .tmtheme files can be imported) Automatic indent and outdent An optional command line Handles huge documents (four million lines seems to be the limit!) Fully customizable key bindings including vim and Emacs modes Search and replace with regular expressions Highlight matching parentheses Toggle between soft tabs and real tabs Displays hidden characters Drag and drop text using the mouse Line wrapping Code folding Multiple cursors and selections Live syntax checker (currently JavaScript/CoffeeScript/CSS/XQuery) Cut, copy, and paste functionality