Bug 12116 - Move fixFloat jQuery plugin outside of language-specific directory

Bug 12116 - Move fixFloat jQuery plugin outside of language-specific directory

This patch moves the fixFloat jQuery plugin to
intranet-tmpl/prog/lib/jquery/plugins so that it will not be duplicated
for each set of translated templates.

This patch also includes a change to staff-global.css to override some
style the floating toolbar inherited when we added Bootstrap widgets.

To test, apply the patch and confirm that the toolbar "sticks" to the
top of the screen when scrolling down on the following pages:

- System preferences
- Authorities editor (Authorities -> New authority)
- Cataloging editor (Cataloging -> New record)
- List contents view (Lists -> View a list's contents)

Followed test plan. Patch behaves as expected.
Signed-off-by: Marc Veron <veron@veron.ch>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>