Solved issue when showing due by when no due by set.

Solved issue when showing in discussion proposals in member profile page
cleanup
Merge remote-tracking branch 'yaniv/release_7' into release_7
Merge remote-tracking branch 'amir/release_7' into release_7
Some style issues.

#TODO: create view to handle board vote in issue page and fix statement for task status.
Merge remote-tracking branch 'yaniv/release_7' into release_7
more fixes for release 7

board vote - handle chairman vote when he already voted on the same proposal
move to archive button - handle the different states