add key managment parameter
add unit test for key mangament parameter
change tabs in spaces
fix error tests key
Fix facet stickyness
Merge pull request #1 from vsilvestro/key-param

Add support for afs:key parameter
Refactor helper configuration to prepare facet autodetection
Refactor facet helper/manager
Auto-detect facets from AFS search engine reply
No more facet configuration/facet manager cache is necessary
Update list of git-ignored files
Update client data interface

Allows to retrieve one or more values corresponding to provided XPath.
Update Promote helper so that custom data can be retrieved as array.
[Bug #2531] Add test
[Bug #2531] Fix
Update version number
Refactor AfsService class
Fix in case $_SERVER['REMOTE_ADDR'] is not available
Fix in case error occured while querying AFS search engine.
Add AfsSearch object: facade to simplify integration