Bug 9261 - Allow librarians to make purchase suggestions for patrons

Bug 9261 - Allow librarians to make purchase suggestions for patrons

This patch adds a new tab to the patron side menu for purchase
suggestions.  From this new tab, a librarian can view the patron's
existing purchase suggestios and also create new suggestions in the
name of that patron.

Test Plan:
1) Apply patch
2) Ensure the system preference 'suggestions' is enabled
3) View the details for a patron
4) Click the new 'Purchase suggestions' tab
5) Click the 'New purchase suggestion' button
6) Add the new purchase suggestions
7) You should now end up back at the borrower's purchase suggestions
8) Verify the new purchase suggestion was added

Signed-off-by: Corey Fuimaono <agent.075@gmail.com>
Step though the test plan. All OK.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>