- Fixes a bug introduced in 2b05cef5

- Deprecates VuFind\Db\Row\UserList::getTags() in favor of VuFind\Db\Row\UserList::getResourceTags()
- Deprecates VuFind\Db\Table\ResourceTags::destroyLinks() in favor of VuFind\Db\Table\ResourceTags::destroyResourceLinks()
- Includes code originally developed as part of pull request #1645.

- Thanks to Wesley Custer for sharing the code.

- Resolves VUFIND-1411.

- Adds setting to enable or disable processing of HTTP headers related to IP forwarding.
- Increases test coverage.

- Resolves VUFIND-1409.

The use of $$ confuses the static code analysis and provides false positive warnings in this function.

- Better support of single sign-on
- Added missing translation call

- Use more inclusive language.

This cleans up and compresses the result by putting all the small scripts to a single block.

Switches to a JS cookie library that supports the SameSite attribute.