Bug 35857: Update authority search pop-up windows with consistent footer markup

Bug 35857: Update authority search pop-up windows with consistent footer markup

This patch updates the cataloging authority finder template in order to
style submission and close buttons in a fixed footer at the bottom of
the pop-up window, with markup consistent with other pop-up windows.

Some inline CSS has been removed in favor of styling the "Clear" button
like a default button. Unrelated, "No results found" message has been
wrapped in a "dialog message" div for consistency's sake.

To test, apply the patch and go to Cataloging -> New record.

- In the "Add MARC record" form, locate a tag which is linked to an
  authority type, e.g. 100$a.
- Click the icon to the right of the field to trigger the authority
  search window.
- There should be a fixed footer in the pop-up window with buttons for
  "Submit," "Clear form," and "Close window." Test that each behave
  correctly.
  - The search results view should have the same footer.
  - Clicking "Choose" from the search results should close the window
    and populate the MARC tag with the correct authority data.

Signed-off-by: Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>