Maintain cursor pointer on inputs

* When hovering on the checkboxes in selectable rows the cursor would
change from the pointer to the default arrow, which is a little
confusing
Clarify the meaning of bulk edit buttons

* Use title attributes to explain what will happen for each button and
the checkbox
* Remove the ambiguous “selected” text, limit buttons to a single word
verb
Add a non-functional tag button

* Not yet functional