- Changes Primo institution configuration (but includes upgrade code)

- Avoids use of __DIR__ (which doesn't work properly with symlinked files).
- Also use APPLICATION_PATH in theme base directory.
- Fixed line lengths in index.php.

Revert "Add UserComments as an option for Captcha protection. Closes VUFIND-526."

This reverts commit dae50b11.

- Also slightly improved wildcard logic.

- Adds support for IPv6 addresses and ranges denoted with partial addresses.

- allows a load-balancer to verify that VuFind is available and functional.

Can be used for example to force using SOCKS 5 proxy.

The config would look like:

[Proxy]
host = localhost
port = 5000
type = socks5

Note that turning an SOCKS 5 proxy on is as easy as executing "ssh -D 5000 username@hostname"

- used for an automatic fallback to another Solr server (a replication slave or SolrCloud replica).

* xml gets converted to json
* changed signature of DAIA driver: instantiated with DateConverter
* refactored DAIA code for more hooks for customize modules
* several bugfixes
* reports always success to Autoconfigure ILS-Test querying id "1" (not a valid DAIA id)

- Sort Voyager pickup locations alphabetically by default
- Make it possible to define or refine the order in the ini file.

- Moved more logic into OpenUrl view helper.
- Added configuration to control display of OpenURLs without code changes.
- Renamed OpenURL record driver methods for improved consistency.
- Added tests.

- Added support for restricted Solr result sets.
- Based on work in pull request #414.