Updated Catalan translation (thanks to Hugo Agud).
Cart / lightbox fixes collected from master.
Added icon.
SideFacets page filter fix.
oninvalid fixes.
Bug fixes.
Lightbox fixes.
Bug fixes.
Cart/lightbox fixes.
Backported fixes.
More backported fixes.
Wikipedia fix.
More lightbox fixes.
Updated version numbers for release.
Style fixes.
Style fix.
Adjusting filterCache and adding documentation

Signed-off-by: Benjamin Wiens <benjamin.wiens@gmail.com>
Adjusting QueryResultCache

Signed-off-by: Benjamin Wiens <benjamin.wiens@gmail.com>
Adjusting documentCache

Signed-off-by: Benjamin Wiens <benjamin.wiens@gmail.com>
Implemented an AbstractRequestBase class to include methods common to all request types.