Bug 946874 - Display the SIM in use on the call screen for DSDS devices.
r=rik
Bug 978114 - [DSDS] Voicemail hotkey should respect the SIM preference
Revert "Bug 958470 - [Ringtones] set ringer type and use web audio api to preview the ringtones"

This reverts commit 4b6b7d119563bb6554c6b49d7f3ad6a2092261f8.
Bug 968483 - [Building Blocks] Update header design to accommodate larger back-button
Merge pull request #17140 from Rik/voicemail-hotkey-978114

Bug 978114 - [DSDS] Voicemail hotkey should respect the SIM preference r=etienne
Merge pull request #17086 from etiennesegonzac/bug-946874-sim-on-callscreen

Bug 946874 - Display the SIM in use on the call screen for DSDS devices. r=rik
Merge pull request #17161 from pivanov/bug-968483

Bug 968483 - [Building Blocks] Update header design to accommodate larger back-button