Optimzations to code, feature enhancements to switch/save and file restrictions, save errors brought back - woops - removed minified CSS/JS for module - unnecessary.  Fixed CSS to use pixels instead of EM since this could change depending on site owner.  Drupal coding standards applied throughout.

Various improvements and new features.  Coder-review'd and organized file structure cleanly.  Issue #1293120 was implemented for it's first official appearance using patch by @aznleng.  Auto-save feature when switching files is now available.

Issue #1262000 by @Pomliane, patched by @fizk.  Changed JS to filter by full URL rather than sanitizing first.

Issue #1293120 by jurgenhaas, aznleng: access limitations to certain CSS files based on permissions.  Only changeable by full admin.  Also added tiny performance boost with minified code option (available in settings).

Issue #1293120 by jurgenhaas, aznleng: access limitations to certain CSS files based on permissions.  Only changeable by full admin.  Also added tiny performance boost with minified code option (available in settings).

Added option to use minified JS and CSS and re-worked CSS to prevent off-screen scrolling and lines too far down to see.

Issue #1906370 by TomTech: segregated Ace Editor to library, lowering code size and compatibility with Ace upgrades.  Added drush command and event for downloading the library.

Issue #1450242 by JoeAndrieu: Live CSS now loads CSS files after @font-your-face preventing font override.  Changes to CSS made in css.css, ace.js left alone in case of future upgrades.

CSS optimizations, font/structure size standardized, colors changed, line numbers now fully visible on left side (previously cut off triple digits).

Security holy patched, CSS and JS cache flush at file save added to options, various clean-up/optimizations w/ comments.

This reverts commit ad19294c.