Added getRecords() to Primo connector so that multiple records can be…

- controls how many facet values should be displayed in list

fixes the warning if a cache folder does not exist

- Don't worry about default Solr behavior; now that we have sorted_by_index setting, we should always use count when index is not set.
- Resolves VUFIND-1128.

- Adds mechanism to limit first/last page options due to limitations of EDS API. (You can access deep results, but not without accessing intermediate pages).

- 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.

Fixed typo in comment

Improve German help translations.

- Simplifies controller; allows better code reuse.

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

This reverts commit dae50b11.