Showing the wifi data usage results in reaching the max number of threads in the pool executor. Switching the loader implementation from Async task to AsynLoader and use a single loader to get the whole list of preferences instead of using a new task to create each list element. Change-Id: I0da19ca09031a7fa178970c192e12a99ab489145 Fix: 33820327 Test: make RunSettingsRoboTests