Addendum to #306

Make keys-to-screen compatible with ngAnimate
Start to work on input of new comments
Ignore textarea tags in keyCapture
Fix resource to handle json in POSTs
Add save data to commentsRetriever
Add code to create a new comment in comments
Allow to define comments on spans of tokens

Makes code uglier - but probably worth it.
Render ... for non sequential comment tokens
Minor fix for object identity in comments
Remove obsolete stuff from state
Addendum to #306

Need to include ngAnimate in spec files
Add own selection state object for clicked tokens
Add idHandler.nonSequentialIds()
Add commentTargets directive
Add state.hasClickSelections()
Fix syntax bug in state.deselectAll()
Add commentCreator directive
Don't handle comment types anymore
Minor change in displ order of retrieved comments
Refacotr comments directive and templates