Create Describe Workbench title search test
Create Describe Workbench author search test

- DRY describe workbench bib search
Create Describe Workbench holdings call number search test

- Create DRY holdings search method in shared context
- Create test for call number search in spec
Create Describe Workbench item barcode search

- DRY method item_search in shared context
- Test for item barcode search in spec
DRY describe workbench shared context search methods
Remove extra whitespace from describe shared context