BRANCH 4.3: fixed keyword search with down chevron to bring up simple
search.  Now looks a lot better
BRANCH 4.3: fixed undefined variable error
BRANCH 4.3: spaced out advanced search better
BRANCH 4.3:
   ensured simple_search_mode is retained on table refresh
   made the default keyword search use the column defined in the simple_search_view
Merge branch 'remkonoteboom/4.3' of https://github.com/southpawtech/TACTIC-DEV into southpawtech-remkonoteboom/4.3

Conflicts:
	src/tactic/ui/app/simple_search_wdg.py
Merge branch 'southpawtech-remkonoteboom/4.3' into 4.3