notifications: remove weave-compat notification API
This will move into komodo-sync instead

(integrated from komodo (trunk) change 82154 by marky)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13685 b87d16e7-d29f-4ee1-b5ec-817d645d335f
breadcrumbs: don't error out if there are no views

(integrated from komodo (trunk) change 82155 by marky)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13686 b87d16e7-d29f-4ee1-b5ec-817d645d335f