Bug 14739: Add several patrons to a new batch will create a new batch per patron...

Bug 14739: Add several patrons to a new batch will create a new batch per patron added

This patch changes the functionality of adding patrons to patroncard batches.  Instead of using only the patron search, there is now a textarea which can either be manually populated with borrowernumbers, or can be populated using the patron-search

To test:
1 - Create a new patron batch
2 - Click the add items button, if there is no data in the borrowrnumber form you should get a popup
3 - Add items to batch using the popup, borrowernumbers should populate to the form
4 - Click add items again and items should be added to a new batch
5 - Create a new batch
6 - Manually enter invalid borrowernumbers to the form
7 - Click add items, batch should return empty
8 - Manually enter valid borrowernumber
9 - Click add items, batch should be updated
10 - Edit an existing batch and confirm add items works as above
11 - Create a new label batch
12 - Click add items with no data, popup item search should appear
13 - Adding items by checking boxes or using 'Add' button - they should populate the text box on the edit batch page
14 - When adding using form the 'Enter by itemnumber' button should be marked automatically
15 - Submit items and confirm they are added to batch
16 - Create a new batch, enter by barcode manually and check 'Enter by itemnumber"
17 - Click add items, no items should be added
18 - Repopulate form with barcodes, check 'Enter by barcode'
19 - Click add items, items should be added correctly
20 - Test various combinations of radio buttons and numbers and using form or not

Signed-off-by: Barton Chittenden <barton@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>