Contacts: always request what type of account to use

Always prompt the user when there is more than one account available on
the system (not counting local). In turn, this also always enables the
multi account drop down, if there is more than one account, in the
account creation fragment.

Change-Id: Id3c0ff42309fe71bcac68f3a96ddfa114585e1e2
Signed-off-by: Roman Birg <roman@cyngn.com>