Hide edit/delete links based on canEdit(), etc.

This is a quick-n'-dirty patch to make DOM hide "action" links such as edit and delete based on per-item permissions (i.e., addresses issue #75). While a more complete solution is needed (there are other points in the code that should be updated), it does only show the action links when those actions are allowed.
Merge pull request #76 from hdrlab/patch-1

Hide edit/delete links based on canEdit(), etc.