Voyager: Implemented support for sorting holdings according to Voyager's Holdings Sort Groups.
Use correct record driver for deduplicated records.
Fixed faulty followup logic.
- Improved comments for greater clarity.
- Resolves PR #130.
Merge pull request #132 from KDK-Alli/dedupfix

Use correct record driver for deduplicated records.
Fixed typo.
Fixed typos.
Implemented LibGuides search backend.
- Thanks to Chelsea Lobdell for sharing 1.x code as a basis for this.
Hide cart checkboxes when disabled.
Eliminated redundant code.
Grid fixes: layout and cart checkboxes.
Merge pull request #131 from KDK-Alli/sortgroups

Voyager: Implemented support for sorting holdings according to Voyager's...
Add support for custom LibGuides limits.
Fixed bug: cannot retrieve all records from sharded results.
Style fixes.
Bootprint syncing.
Delete duplicate files from bootprint.
Merge branch 'master' of https://github.com/vufind-org/vufind
Bulk action form tweaks.
Style fix.
Inputs styling.