BRANCH 4.2-105:
  fixed the use of LookAheadTextInputWdg in EditWdg by properly setting its name with edit| prefix
BRANCH 4.2:
  fixed the LookAhead search issue by setting the name only if it is not None
BRANCH 4.2:
  fixed the None display issue for empty datetime column
  fixed a Common.get_dir_info issue in the case it sees a link, it should skip retrieving its directory size
Merge branch '4.1-021' of https://github.com/southpawtech/TACTIC-DEV into 4.1-021