Squashed 'subtree/bokehjs/' changes from cf2be30..bc6c75d

bc6c75d gridview is now setup so that there is room for the toolbar
bef6012 CHANGELOG
f0e5f25 Removed confusing line from top of demo page; demo.sh already runs hem.

git-subtree-dir: subtree/bokehjs
git-subtree-split: bc6c75d35fede08310391edc40929f76fea921a8
 pulled in latest bokehjs
merged