Resolving VUFIND-787 (Enhanced getMyTransactions and associated methods for Horizon)
Thanks to Jay Roos.
Fixed comment.
Upgrade to Zend Framework 2.1.5.
Progress on VUFIND-777 (adjustments to record tab config).
Thanks to Luke O'Sullivan.
Added test for upgrade from 1.4.
Resolving VUFIND-791 (EndNote Web export support).
Thanks to Luke O'Sullivan.
More explicit dependency injection for stats classes.
Eliminated NoILS dependency on service locator.
Cleaner translator injection for search options.
Removed unnecessary comments.
Options objects no longer depend on service locator.
Inject related factory into record driver.
Decoupled record drivers from service locator.
Fixed broken tests.
Provide connector method for term extraction

* VuFindSearch/Backend/Solr/Connector.php (terms): New method. Extract
  index terms.
* VuFindSearch/Backend/Solr/Backend.php (terms): Use connector method.
Support `identity` munge

* VuFindSearch/Backend/Solr/SearchHandler.php (mungeValues): Support
  `identity` munge.

Identity munge uses the search string as-is.
Document identity munge

* ../config/vufind/searchspecs.yaml: Document identity munge.
Resolving VUFIND-792 (HorizonXMLAPI hold bugs).
Thanks to Jay Roos.
Resolving VUFIND-788 (Horizon holds improvements).
Thanks to Jay Roos.
Merge branch 'master' into solr4x