LP1837478 Angular Catatalog Recent Searches & Templates

LP1837478 Angular Catatalog Recent Searches & Templates

Adds two new dropdowns (below basket actions) for recent searches
(similar to those found in the staff TPAC) and search templates.

Search templates are a new feature which allow staff to save canned
search filters/settings without the query content, so common searches
may be easily recalled.

For UI consistency and to preserve some space, the Basket Actions selector
is now a dropdown instead of a select element.

Adds a new workstation setting 'eg.catalog.search_templates' for storing
templates.

Includes a number of improvements to the underlying Catalog code and a
new ArrayUtil class, which adds a simple equals() function for comparing
arrays.

Signed-off-by: Bill Erickson <berickxx@gmail.com>