DefaultEntryPanel changes

- Now indicates entry index on default entry panel and in status bar
(can be useful for error messages such as "Bad frame character in lump
6783" where it is a bit annoying to find lump 6783 by selecting them all
from the start).
- Fixed bug where selecting two entries and deselecting the last
selected entry didn't update the display back into single entry mode (it
still displayed two entries selected).
Added new config files to project file.