Add muting of threads.

// FREEBIE

Signal/src/ViewControllers/OWSConversationSettingsTableViewController.m

@@ -712,12 +712,11 @@ static NSString *const OWSConversationSettingsTableViewControllerSegueShowGroupM
 
 - (void)showMuteUnmuteActionSheet
 {
-    NSString *title;
+    // The "unmute" action sheet has no title or message; the
+    // action label speaks for itself.
+    NSString *title = nil;
     NSString *message = nil;
-    if (self.thread.isMuted) {
+    if (!self.thread.isMuted) {
-        title = NSLocalizedString(
-            @"CONVERSATION_SETTINGS_UNMUTE_ACTION_SHEET_TITLE", @"Title of the 'unmute this thread' action sheet.");
-    } else {
         title = NSLocalizedString(
             @"CONVERSATION_SETTINGS_MUTE_ACTION_SHEET_TITLE", @"Title of the 'mute this thread' action sheet.");
         message = NSLocalizedString(

Signal/translations/en.lproj/Localizable.strings

@@ -265,9 +265,6 @@
 /* Label for button to unmute a thread. */
 "CONVERSATION_SETTINGS_UNMUTE_ACTION" = "Unmute";
 
-/* Title of the 'unmute this thread' action sheet. */
-"CONVERSATION_SETTINGS_UNMUTE_ACTION_SHEET_TITLE" = "Unmute";
-
 /* ActionSheet title */
 "CORRUPTED_SESSION_DESCRIPTION" = "Resetting your session will allow you to receive future messages from %@, but it will not recover any already corrupted messages.";