Bug 16995 - Remove event attributes from two include files

Bug 16995 - Remove event attributes from two include files

This patch removes event attributes from two include files:
cat-toolbar.inc and members-toolbar.inc.

In cat-toolbar.inc an unused <form> tag with an "onsubmit" attribute has
been removed.

To test, apply the patch and:

- View the detail page for any bibliographic record. All toolbar buttons
  ("New," "Edit," "Save," etc.) should work as expected.
- View the detail page for any patron. Click the "Add message" button in
  the toolbar. Selecting a predefined note should correctly populate the
  textarea with your selected message.

Signed-off-by: Claire Gravely <c.gravely@arts.ac.uk>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>