Properly save Fragment state

[kylemsguy]

Currently, if the device rotation is changed, or if in the new UI the user changes to a different page, the state on the current fragment is lost. What needs to be done is that each instance variable has to be saved properly, and restored the next time the Fragment is created on a fragment restore. Fixed for Answer screen only

A related issue is when the phone is rotated, the app returns to HomeFragment. What needs to be done is to implement onPause and onResume to save and restore state properly. Fixed

[kylemsguy]

The original problem has been fixed, but an improvement would be that if the Answer button was clicked in the sidebar, it would restore the previous state of the fragment, instead of refreshing the fragment as before.