Fix for Bug 3319 - Need error message when adding patron and libraries are defined

Fix for Bug 3319 - Need error message when adding patron and libraries are defined

- Hiding patron add toolbar when branches or categories are undefined
- Blocking patron entry form if branches or categories are undefined
- Removing nonfunctional template logic for displaying missing category
  error message.

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
(cherry picked from commit e6a3029470501b3a8269986c1448d5f8b2d6b7f2)

Signed-off-by: Chris Nighswonger <chris.nighswonger@gmail.com>