Merge pull request #5 from arild-haugstad/master

Updated install-guide + made backups transparent to client/JavaScript
Move jQuery-UI images to appropriate folder
Calling shoot_slides will now resize the shots for thumbnails too.
Replace mathtex with standalone python script pngtex.py
Remove jQuery-terminal from LICENSE-OTHER
Added empty but necessary latex/imgs and latex/packages directories in latex/
Documentation and some cleanup of animations.js
Documentation for idmanager.js
jshint corrections
pngtex-simplification
  - CLEANUP: using tempfile.mkdtemp() to make temporary directory
  - CLEANUP: combining the docclass/begindoc/enddoc to a single file template.tex
  - BUGFIX: adding the missing math mode for the formula
  - CLEANUP: using the cwd-parameter to call() rather than setting state with chdir()

  - FEATURE REMOVAL: removed the "packages"/"source" dir for latex --- simplifies things slightly; if it was/is actually used, then remoning it would be a problem...
Merge branch 'master' of https://github.com/praabjerg/SlyPress