(schwardt, laura) Reworked post-selection to be applied one dimension at a time while also co-existing peacefully with scalar selections. Removed unused variables.
(schwardt, laura) Reworked post-selection to be applied one dimension at a time while also co-existing peacefully with scalar selections. Removed unused variables.

git-svn-id: 88c9ca70625627825018ef89be83f0d41a8e4cf1@15253 b56c7a7d-ac47-0410-a905-b6f7de78896a

ska-sa/katdal