fix invalid clear of completion widget (admin)
add some descriptions for website states + style
move eba_cache to tools dir + rename
add module identifiers into eba_db
remove useless logs
remove useless directory
cleanup
re-implement preregister system with eba_egroups

eba_groups and eba_egroups could be factored into another functor
maybe.
This implementation is not really DRY, I think, this should be reviewed
with another better implementation (I need time to do that, and I don't
too much time for this ;))
style + cosmetic
fix global opacity with ojw_popup
add links into Makefile of samples dir
add get_emails_in_egroup function (db, egroups)
rename Email_groups to Egroups in Eba_main
add preregister section in admin page
style (admin page)