ContactRequest: show vCard info

Show the photo, the username/ring id and the profile name which
come from the vCard of the ContactRequest.

Add icons for accept and block.

[SS: reduce code repetition; use nullptr instead of NULL; improve ci msg]

Change-Id: Ide07c99e5990572bae17c8726a77e35fc6d5a16f
Signed-off-by: Stepan Salenikovich <stepan.salenikovich@savoirfairelinux.com>
Reviewed-by: Stepan Salenikovich <stepan.salenikovich@savoirfairelinux.com>
6 files changed