KolabMailImapClient: use new getter function for Camel storage path
KolabMailImapClient: use new getter function for Camel storage path

* in kolab_mail_imap_client_bringup(), call the Camel path getter
  function kolab_util_camel_get_storage_path()
* removes the need to do own Camel path fiddling here

GNOME/evolution-kolab,GNOME/evolution-kolab