Bug 3941 - Combine Notices & Messaging Tabs

Bug 3941 - Combine Notices & Messaging Tabs

Changes to notices tab to make it a full replacement for messages tab.
Removes messages tab from patron account.

- repairs view of patron address in left column (category description, branch)
- shows some explanation, when there are no messages for a borrower
- makes the notice an expandable field, a click on the subject will
  expand the field to show the message content
- makes message status and message transport type translatable,
  by moving the possible values into the template
- removes the messaging tab from various menus
- removes the files that were associated with the messaging tab
- preserves the line breaks in message content to improve readability

Also fixes Bug 6593 - Some information missing from the "Notices" tab.

Signed-off-by: Liz Rea <lrea@nekls.org>
Signed-off-by: Ian Walls <ian.walls@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>