Fix bad performance with TimerFileWatcher

TimerApplication.c

@@ -57,7 +57,7 @@ static void timer_application_activate(GApplication *app) {
 }
 
 TimerApplication *timer_application_new() {
-    return g_object_new(TIMER_TYPE_APPLICATION, "application-id", "org.zander.practicetiemr", "flags", G_APPLICATION_FLAGS_NONE, NULL);
+    return g_object_new(TIMER_TYPE_APPLICATION, "application-id", "org.zander.practicetiemr", "flags", G_APPLICATION_DEFAULT_FLAGS, NULL);
 }
 
 const char *timer_application_get_config_file(TimerApplication *self) {

TimerClock.c

@@ -25,7 +25,7 @@ static void timer_clock_thread_callback(TimerClock *self) {
             self->lastTick = now;
             self->currentTime = 0;
         }
-        g_usleep(50);
+        g_usleep(500);
     }
 }
 

TimerFileWatcher.c

@@ -31,6 +31,7 @@ static void timer_file_watcher_tick(TimerFileWatcher *self) {
             }
             last_tick = now;
         }
+        g_usleep(500);
     }
 }
 

TimerTaskTree.c

@@ -396,6 +396,7 @@ void timer_task_tree_set_data_path(TimerTaskTree *self, const char *path) {
     if (self->fileWatcher) {
         g_object_unref(self->fileWatcher);
     }
+    self->fileWatcher = NULL;
     self->fileWatcher = timer_file_watcher_new(path);
     g_signal_connect(self->fileWatcher, "file-changed", G_CALLBACK(data_file_updated), self);
 }