lp1806087 Place Holds Improvements

lp1806087 Place Holds Improvements

- Disable SMS Carriers dropdown if Notify by SMS  unchecked.
- Move Search for patron button to same level as "Place Hold (name)" text.
- Add Search icon to "Search for Patron" button
- Add "Submit" button to Barcode input for improved UX.

Signed-off-by: Kyle Huckins <khuckins@catalyte.io>
 Changes to be committed:
	modified:   Open-ILS/src/eg2/src/app/staff/catalog/hold/hold.component.html

Signed-off-by: Bill Erickson <berickxx@gmail.com>
Signed-off-by: Dan Wells <dbw2@calvin.edu>