contacts: add block function

With a long click on the contact in the smartlist or a click on the
option in the conversation, it is possible to block a contact. This
contact is added in the blocked contacts list but it is not removed
to the smartlist for now.

Change-Id: I82d691d1f16c8436673acd3cddbf7daae9b5e504
Reviewed-by: Hadrien De Sousa <hadrien.desousa@savoirfairelinux.com>
Tuleap: #1500
diff --git a/ring-android/app/src/main/res/values/arrays.xml b/ring-android/app/src/main/res/values/arrays.xml
index d250a8b..2527780 100644
--- a/ring-android/app/src/main/res/values/arrays.xml
+++ b/ring-android/app/src/main/res/values/arrays.xml
@@ -28,6 +28,7 @@
     <string-array name="conversation_actions">
         <item>@string/conversation_action_copy_peer_number</item>
         <item>@string/conversation_action_delete_this</item>
+        <item>@string/conversation_action_block_this</item>
     </string-array>
 
 </resources>
diff --git a/ring-android/app/src/main/res/values/strings.xml b/ring-android/app/src/main/res/values/strings.xml
index f84fce1..06f2dc3 100644
--- a/ring-android/app/src/main/res/values/strings.xml
+++ b/ring-android/app/src/main/res/values/strings.xml
@@ -161,6 +161,7 @@
     <string name="conversation_action_copy_peer_number">Copy number</string>
     <string name="conversation_action_copied_peer_number_clipboard">%1$s copied to clipboard</string>
     <string name="conversation_action_select_peer_number">Select a number</string>
+    <string name="conversation_action_block_this">Block this contact</string>
 
     <!-- Contacts -->
     <string name="add_call_contact_number_to_contacts">Add %1$s ?</string>