Bug 20647: (alternate) When ILL is enabled the hover effect on the ILL requests butto...

Bug 20647: (alternate) When ILL is enabled the hover effect on the ILL requests button is wrong

This alternate patch adds a new icon to the sprite image which gives
icons to the link on the staff client home page. It modifies the CSS
positioning for all the links as the new image sprite is somewhat
different.

The SVG file from which the sprite image was generated is also updated,
and the about page has been updated to give credit to the creator of the
icon.

Unrelated change: The cataloging link is moved to the second column.
Although it's probably rare for all modules to be enabled and available,
this puts the same number of links in each column.

To test, apply the patch and clear your browser cache if necessary. With
interlibrary loan enabled, view the staff client home page and confirm
that all the module links look correct, including when you hover your
mouse over them.

Confirm that the about page lists the new icon under the "licenses" tab.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>