small sidebar tweaks
Merge branch 'develop' of github.com:osmlab/maproulette into develop

* 'develop' of github.com:osmlab/maproulette:
  Keys match access keys
  Adding access keys manually
  Upgrading jquery
  Rewriting challenge help

Conflicts:
	maproulette/templates/index.html
adding unassign script to fix #118
Merge pull request #119 from mvexel/develop

adding unassign script and small sidebar tweaks