Rather return an empty array than null.
fixes a result caching issue while reorder sorting
Update for "hide clear filter" option.
Merge pull request #133 from bytehead/master

Fixes issue with reordering the sorting in DC_General - DC_General was receiving the cached results instead of the real values.
First shot of swapping the stdClass attribute based render settings with a real class.
This enables feature #132.
First version of the "Clear all filter" element.
Merge branch 'rendersetting_attribute' of github.com:MetaModels/core into rendersetting_attribute