added conversion of PDF files after setContent, needed for pdf viewer
currently only tested for windows (exe included here), but might also work on mac and linux
pdf2htmlEX can be downloaded from https://github.com/coolwanglu/pdf2htmlEX/wiki/Download
added conversion progress indicator to file icon
Document Viewer: Basic.. Nothing special.
Merge branch 'viewer' of github.com:winfel/wa_knowledge_structuring into viewer
Forgot getPaper function...
Updated jquery to version 1.8.3. Needed for parseHTML function.
Displays papers correctly without iframe...
Back to iFrame for presentation purpose.

Back to jQuery 1.7... New files still in git with corresponding endings (...-1.8.3).
guess mime type pdf from file name, if mime type is application/x-octet-stream
(firefox does not provide mime type with uploads)
slow down animation, hide progress-ring when 100%
added class to progress circle for better distiction
fixbug of movable area and not-hiding menu...
display paper specified by attribute 'file'
test scaling of document
added highlighting to viewer
TODO: save
- save, load and reset highlights
- added test buttons
TODO:
- automatically save highlights (easy, but beware of conflicts, merge on server side)
- automatically refresh highlights if changed on server side (quite easy)
- avoid error messages on console
- add possibility to remove single highlights
avoid error messages on console when loading (no duplicate click listenener registered)
Viewer: Resizing the viewer object will now also scale the paper in it.
Viewer: createRepresentation for both Ajax and iFrame solution. However we are focusing on the iframe solution since it is cleaner.

TODO: Again scaling it's content.
WebServerE.js: Mime-Type application/* and file ending pdf fix.