Show available categories in Contacts view
As far as I understand it is only possible to show contacts from a certain Category (Group) by typing in the Category in the Search field. The Evolution Categories seem to be some kind of default tags... For this one has to remember the Categories (Groups).
It would be nice to have a overview by either
change the usage of the current Category
to the Categories (groups) of the Contacts
or e.g. use something like the Thunderbird CardBook extension (list of available categories below the Address Book name in the left sidebar)
IMHO solution 2) is very convenient.