Refactor the left hand side menu to include user specific action for pages.
Refactor the left hand side menu to include user specific action for pages.

We also create a place holder for user specific actions since this may not
be required for every page. So the page which requires these actions will
implement it.

--HG--
extra : rebase_source : 9ccfe7834977a69ee20e322768317bcddfc7869a

rhyolight/nupic.son,rhyolight/nupic.son,rhyolight/nupic.son