remove config options:
- locale_dir
- locale_dir_default
add a config option:
- locale_dirs - a list of directories with locale files (translations)
We start reading locale from the first directory and files with the same name
in each directory are concatenated.
some plugins need to be fixed yet: ticket, gallery, group, menu
- added current user to default models as "user"
- renamed in User: super_user -> is_super_user, env -> admin_env, pass_hash_salted -> is_pass_hash_salted
- now Users class has a WinixModel as a base class
some plugin calls have to be fixed yet
- added UserWrapper model with a pointer to User class
- removed from ItemContent: methods for accessing 'meta' and 'admin_meta', now ezc can iterate through Space classes
- fixed in env winix function: if there is "changeuser" parameter then we should only switch the user (not save anything)