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

Changed the mobile navbar icons (thus reducing the number of animations) and redesigned the Settings menu.

Included the navbar under the dark overlay when offset menu is open in portrait, removed some redundant code.