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>
diff --git a/pixmaps/pixmaps.gresource.xml b/pixmaps/pixmaps.gresource.xml
index 730c045..84dd852 100644
--- a/pixmaps/pixmaps.gresource.xml
+++ b/pixmaps/pixmaps.gresource.xml
@@ -21,5 +21,7 @@
 	<file alias="conversations_list">ic_question_answer_black_24px.svg</file>
 	<file alias="contact_requests_list">ic_verified_user_black_24px.svg</file>
 	<file alias="history_list">ic_history_black_24px.svg</file>
+	<file alias="block">ic_block_black_24px.svg</file>
+	<file alias="add">ic_add_black_24px.svg</file>
   </gresource>
 </gresources>