newaccountmodel: account creation

This patch fixes next problems:
-check profile type after adding account to accounts list and
updating account details. Otherwise profile type is always INVALID
-add option to create SIP account with URI, to avoid creating an entry
with empty uri in db
-do not save ring account with empty uri
-set account credentials before saving configuration to save a new
credentials in .yml

Gitlab: #402

Change-Id: I98b2f00d0f879930067bcbe2d305569d27ec90a2
Reviewed-by: Sebastien Blin <sebastien.blin@savoirfairelinux.com>