add registration update function

Signed-off-by:Eric Villard <dev@eviweb.fr>
add yui limiteddrop class

from https://github.com/eviweb/yui-lib

Signed-off-by:Eric Villard <dev@eviweb.fr>
add drag & drop feature for registration modification

Signed-off-by:Eric Villard <dev@eviweb.fr>
add css stylesheet for drag & drop feature
Signed-off-by:Eric Villard <dev@eviweb.fr>
update component strings

Signed-off-by:Eric Villard <dev@eviweb.fr>
update alternative_table_registrations function

Signed-off-by:Eric Villard <dev@eviweb.fr>
add registration modification support

Signed-off-by:Eric Villard <dev@eviweb.fr>
add ajax remote script for registration modification

Signed-off-by:Eric Villard <dev@eviweb.fr>
update script header author information

Signed-off-by:Eric Villard <dev@eviweb.fr>
increase version number
Signed-off-by:Eric Villard <dev@eviweb.fr>
fix: users are not remove from groups they do not belong to

during the group generation

Signed-off-by:Eric Villard <dev@eviweb.fr>