Improve Dialer analytics

* Send screen view for first fragment loaded inside ListsFragment
* Send screen view for voicemail playback fragment
* Send screen view for currently active fragment when activity is restarted
* Don't send spurious screen views on rotation
* Send screen views for call log fragments in call log activity, and
differentiate between them with a tag

Bug: 18158037

Change-Id: I09fda53db33f6a6acc4a3b477de992aa94921c71