Bug 30623: Copy permissions from one user to another

Bug 30623: Copy permissions from one user to another

This patch adds controls to the patron "Set permissions" page allowing
the user to copy a set of permissions from one patron to another.

The patch also makes a minor correction to global staff interface CSS to
correct the appearance of non-primary split buttons.

To test, apply the patch and rebuild the staff interface CSS. You may
want to clear your browser cache.

- Locate a patron in the staff client and choose More -> Set
  permissions. You might want to start with a staff patron who has
  multiple permissions enabled.
- You should see two new buttons in the toolbar immediately above the
  list of permissions: "Copy settings," a split button with a secondary
  option to choose "Forget copied settings"; and "Paste settings" which
  should be disabled by default.
- Clicking the "Copy settings" button should trigger the copy icon to
  cycle/fade from the copy icon to the check-mark icon and back to the
  copy icon. I thought this interaction needed some visual feedback
  since it doesn't otherwise trigger visible action.
- Clicking the "Copy settings" button should also enable the "Paste
  settings" button.
- Locate another patron, preferable one with permissions visibly
  different from your first choice.
- On their "Set permissions" page, click the "Paste settings" button.
  The list of permissions should expand all settings and all the
  checkboxes should now match your original choice.
- At this stage you could find another patron and paste the same
  permissions again.
- Click "Copy settings -> Forget copied settings." The "Paste settings"
  button should become disabled.
- Using the browser console to check the contents of Local Storage
  should confirm that the "copiedPermissions" entry has been removed.

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>