Make it possible to disable storage retrieval requests in the Demo driver.
Minor fix to en-gb translation for storage retrieval requests.
Fixed storage retrieval request form breadcrumb text.
Merge pull request #86 from KDK-Alli/callslip3

A couple of minor fixes and possibility to disable storage retrieval requests in the Demo driver.
Fixed bad logic.
- Thanks to Luke O'Sullivan for the catch.
Restrict new account login email to specific domain(s)
- Resolves VUFIND-953
Progress on configuration cleanup.
More config refactoring.
Bootstrap cart fix for VUFIND-955
Fix for saving from cart when not logged in. Bootstrap.
Fixed botched check for MultiBackend driver in MultiILS authentication.
Merge pull request #87 from KDK-Alli/multi-ils2

Fixed botched check for MultiBackend driver in MultiILS authentication.
Turned off debug.
Style fixes.
Lightbox fixes. Export, saving, collapsing. Part 1 of 2.
Lightbox fixes 2: Acknowledgements for deletion and emptying of cart and email. Select all checkbox behavior fixed, now unselects when an item is unselected.
Stylizing export download. Multiple item button fix. Bootstrap.
Fixed typo.
Added setter for helpers.
Added getter.