Bug 5428: (QA follow-up) Add searchid for deleting items in a batch and editing in...

Bug 5428: (QA follow-up) Add searchid for deleting items in a batch and editing in batch

To test:
0 - Perform a search in the staff client
1 - Click a title to go to the details page for a record
2 - Click the 'Edit' button and select 'Edit items in a batch'
3 - Note the searchid is in the url
4 - Make a change and hit 'Save'
5 - Note the 'Return the the record' link at the top, and the button on the bottom include searchid in URL
6 - Click one and note the brwoser is stil there
7 - Click 'Edit' and select 'Delete items in a batch'
8 - Delete one item
9 - Click return to record
10 - Browser is there
11 - Click 'Delete items in a batch again
12 - Select all and check 'Delete records if no items remain'
13 - Delete them
14 - Note you have a link to 'Go back to the results'

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>