Revise layout/style of VoicemailPlaybackLayout.

- Delete now-unused old icons.
+ Add new material icons for voicemail playback.
+ Rearrange buttons, padding/spacing.
+ Change ripple feedback when pressing button.
+ Use different text fields for total duration and state labels.

Bug: 22070564
Change-Id: Ibc9b9908154ac0a846f828bb9707a61ab15f8ba5