Bug 19801: Display messages on user details page as well as on check out page

Bug 19801: Display messages on user details page as well as on check out page

To test:

Look up a borrower, add a message (internal or opac)
Click the Details tab for that borrower
Messages should be displayed above the user information [is this the right place? it could go below]
adding messages on this page should make them immediately available
deleting messages on this page should delete them immediately and bring you back to the detail page.

Basically, make sure messages work from both the Check out and detail pages and that there are no typos.

Messages should work the same as they always have from the Check Out page.

sponsored-by: Catalyst IT
Signed-off-by: Simon Pouchol <simon.pouchol@biblibre.com>
Signed-off-by: Marjorie Vila <marjorie.barry-vila@collecto.ca>
Signed-off-by: Alex Arnaud <alex.arnaud@biblibre.com>
Bug 19801 - Fixes for QA

- Fixes indentation
- changes messages to patron_messages (even though it's not like that on the circulation page.)

Signed-off-by: Marjorie Vila <marjorie.barry-vila@collecto.ca>
Signed-off-by: Alex Arnaud <alex.arnaud@biblibre.com>