Beginning to create tick marks

Conflicts:
	content/modules/dev/ui.docView11.js
Ticks made when new note is made.  Undid previous css changes (border radius to buttons)
tickmark code neater in one function.  trying to call function when rendering page but currently can't access self._player.getDuration

Conflicts:
	content/modules/dev/ui.docView11.js
tick marks appear when rendering! And made sure the thumb moves to the selected thread position

Conflicts:
	content/modules/dev/ui.docView11.js
fix cherrypick error
revert some debug msg
display warning if using flash youtube player
Merge branch 'master' of github.com:nbproject/nbproject
Merge branch 'master' into dev
fix typo
add section name for threads for youtube and html viewers
better bookmarklet
1. Drag-to-reassign student section. 2. Two sections in the same class cannot have the same name
Ability to unassign, see unassigned students, and a text description