ignore files like themes/.../css/less/lessphp_c007ba97e4ce96f1beb961f751016c35.list

- Removes unnecessary base behavior from majority of drivers.

- Thanks to Jason Cooper for the patch.

- use the standard Date Converter to format dates consistently
- display some date values that were previously listed as 'N/A'

- It now works when there are additional fields in the selected sort or *:* is specified as the search term. 

This reverts commit ed994210.

- Reduces memory pressure on Solr
- Improved speed (at least under some circumstances)