Remove apps from the database when they are removed from the app list

Limelight/Database/DataManager.h

@@ -21,6 +21,7 @@
 - (void) updateAppsForExistingHost:(TemporaryHost *)host;
 - (void) updateIconForExistingApp:(TemporaryApp*)app;
 - (void) removeHost:(TemporaryHost*)host;
+- (void) removeApp:(TemporaryApp*)app;
 
 - (TemporarySettings*) getSettings;
 

Limelight/Database/DataManager.m

@@ -140,6 +140,16 @@
     }
 }
 
+- (void) removeApp:(TemporaryApp*)app {
+    [_managedObjectContext performBlockAndWait:^{
+        App* managedApp = [self getAppForTemporaryApp:app];
+        if (managedApp != nil) {
+            [_managedObjectContext deleteObject:managedApp];
+            [self saveData];
+        }
+    }];
+}
+
 - (void) removeHost:(TemporaryHost*)host {
     [_managedObjectContext performBlockAndWait:^{
         Host* managedHost = [self getHostForTemporaryHost:host];

Limelight/ViewControllers/MainFrameViewController.m

@@ -195,6 +195,11 @@ static NSMutableSet* hostList;
                 
                 [host.appList removeObject:app];
                 
+                // It's important to remove the app record from the database
+                // since we'll have a constraint violation now that appList
+                // doesn't have this app in it.
+                [database removeApp:app];
+                
                 break;
             }
         }