Bug 16801 - Include Font Awesome Icons to check/unchek all in Administration > Librar...

Bug 16801 - Include Font Awesome Icons to check/unchek all in Administration > Library transfer limits

For purpose to uniformity and leave just one entry in .po files,
this patch change: Check all/Uncheck all -> to -> Select all/Clear all.
Also added Font Awesome icons.

To test:
-Go to Administration > Library transfer limits
-Notice about Check all/Uncheck all for "For all items types" and
 "Policy for:"
-Apply patch and refresh the screen
-Notice about the new Select all/Clear all links with their icons
-Confirm that all links work as expected

Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>