Replace the pencil icon with mockup-supplied png.
Show friendly name for content

So when you hover over the pencil icon, it tells you whether it is a book or a
module.
Show the pencil icons on the workspace side.
Turn edit pencil into a dropdown, allow user also to edit.
Enable bootstrap tooltips on menu items.
Revert "Replace the pencil icon with mockup-supplied png."

This reverts commit 4a3a409f315eb49aaed60fa71a504af898ea82eb.

Conflicts:

	styles/workspace/sidebar.less
Restore some styling lost in the revert merge-conflict.
Merge pull request #44 from oerpub/pencil-from-mockup

Implement the pencil from the mockup