Add the 0 agree/0 disagree check.
Add remove anotation from a group.
Refactor the data structure of annotations
Data structure improved.
Fix insert annotation display bug.
0-agree/disagree can now disappear.
Clear comments.
Change check/cross to T/F with expansion effect
New UI implemented partially.
Font changed to tc-font.
Change opacity when displaying user's opinion
Fix bugs of delete annotations.
Temporaryily fix for unmatched length.

The length of postList and jquery selector never matches because of
duplicated posts.
Temporay fix fo unmatched length
Transition effect of the arrows
Merge remote-tracking branch 'origin/master'

Conflicts:
	js/processor/processor.js
	manifest.json