Query: Reworked fetching of tickets for cached queries to only use a single SQL to generate the combined ticket list. This should handle changes better, including fix for the sorting issue in #7039.
Query: Reworked fetching of tickets for cached queries to only use a single SQL to generate the combined ticket list. This should handle changes better, including fix for the sorting issue in #7039.

Also used the opportunity to remove some unused imports.

pkdevbox/trac,pkdevbox/trac,pkdevbox/trac,pkdevbox/trac