add contact request view

This new view is implemented by changing the conversation model filter
type to PENDING. Two buttons are added under search field to switch
between regular conversations and those from not-yet-trusted contacts.

Change-Id: I0207bc41cd13b63624b353cce49877cc6694bdb7
Reviewed-by: Olivier Soldano <olivier.soldano@savoirfairelinux.com>
diff --git a/src/SmartViewVC.h b/src/SmartViewVC.h
index 0c9e714..dc94a43 100644
--- a/src/SmartViewVC.h
+++ b/src/SmartViewVC.h
@@ -51,4 +51,9 @@
  */
 -(void)deselect;
 
+/**
+ * Change list selection to Conversation
+ */
+-(void)selectConversationList;
+
 @end