Update (some) table actions to use icons together with text

Also:
 * Update the table actions anchors with the title attribute in order
   to display the verbose_name on hovering.
 * Restore proper alignment for "Filter" buttons (Chrome)

Implements blueprint iconify-buttons

Change-Id: I4d744e5104d78da3874b699fc2e27f34158926a7
Merge "Update (some) table actions to use icons together with text"