Updated faulty PDF file conversion mechanism

- Extract the PDF page to a single PDF file.
- Convert the PDF file to a PNG image.
- Conert the PNG image to a SWF file.

UI improvements and bug fixes

Conflicts:
	bigbluebutton-html5/app/client/views/whiteboard/whiteboard.coffee

Revert back pdf2swf conversion option to 'poly2bitmap'

Update create.jsp

Removed test code in create API example.

Escaped username string displayed to prevent JavaScript injection.
Fixes #2913 

 - sometimes we see multiple wav files on recorded meetings. This was…

Document conversion update using swfdump and NuProcess library

- Implemented a new logic for detecting heavy converted swf files from PDF, using obejct placements, text and bitmap count.
- pdf2swf conversion fallback to 'bitmap' instead of 'poly2bitmap' to garantee that file can be opened fast with flash player.

Add set presenter to HTML5

Add Kick user to HTML5

html5client:clear slide when presenter removes current presentation

html5client: reworked viewing slide change; moved the cursor out of Presentation collection

force display of slide even if .rendered does not trigger. Will need to decouple pointer coord from Presentation

Conflicts:
	bigbluebutton-html5/app/client/stylesheets/whiteboard.less

 - sometimes we see multiple wav files on recorded meetings. This was due to starting recording again
   when the user gets disconnected from bbb-apps but still connected to audio.

 - cancel the message sending task when it takes a long time to compl…

 - fix where 2 events are recorded in redis for each voice event.

HTML5 client: redesigned mobile navbar and offset menus + small mobile view adjustments.

Took the whiteboard controls out of the whiteboard container, removed check for the opened upload window