Smart Repository: UI updates

Smart Repository: UI updates

* Number of revisions of a document can now be seen in the list view.

* Select menus now styled in material design with "selectpicker"

* Favicon updated

* Widths and alignment within columns changed

* If there's only one revision, count of revisions is hidden.

* Meta-filters given a nice style with a trash icon link to remove the filter.

Some more updates are lined up. Stay tuned!