Add drawing editor to the HTML5 editor

- Added modified drawjs.fla and drawEditJS.swf (communicate through js)
- added drawingjs.php
- Implemented edit draw button
- added variable rlopathvariable
- renamed mediaurlvariable to rlourlvariable
Export models_html5/glossary.html if the glossary is used
tart HTML editor when creating a new LO
Make path absolute for glossary images
Handle mp4 files in mediaElement
Use logos from the site_details table
Latest CodeMirror, including patch on blur