This reverts commit 8402be3b.

Ran these suckers through ImageOptim, which crunched 'em down real nice.

	- If link has a "@" and a ":", do not consider it an email address.
Add un-minified version of plugin.js file for link plugin.
Update build instructions to include media plugin.
Commit re-built minified JS.
Add all plugins to Jakefile.js in zip file.
Reason for this commit:
Split acceptance test was failing when TinyMCE detected a Split asset
key as an email address. Fix was to modify email address detection.

- fixed missing media and link buttons on image

 - fixed a CSS issue with the sharing button

Separating and documenting tinyMCE font imports from customized vendor code and customized render styling css files (because font must load first in iframe).

Add the TinyMCE font file to the CMS pipeline.

Needed for TinyMCE CodeMirror plugin.

Changed tiny-MCE to not load CSS files dynamically.
Added CSS files for tiny-MCE in env files.
Moved TinyMCE files to directory structure required by Jake command.
Changed clients of "tinymce.min.js" to use "tinymce.full.min.js" instead.
Updated CHANGELOG to indicate tinymce version 4.0.20.
Renamed tinymce.css.
Directions for creating tinymce.full.min.js and commenting of edX changes.
Updated comments related to disabling dynamic JS and CSS file loading in tinymce.
Allow TinyMCE to handle CSS within the iframe.