Associate Materials Updates

Associate Materials Updates

- Ensure Shelving Location input checkbox
ticks when selecting a value.
- Ensure temporary value inputs are not
cleared when entering a new item.
- Fully select contents of Barcode input
field when selected.
- Clear bBarcode input upon hitting enter.

Signed-off-by: Kyle Huckins <khuckins@catalyte.io>
 Changes to be committed:
	modified:   Open-ILS/src/eg2/src/app/staff/admin/local/course-reserves/course-associate-material.component.html
	modified:   Open-ILS/src/eg2/src/app/staff/admin/local/course-reserves/course-associate-material.component.ts