Bug 1093951 - Entering wifi power save mode when screen off. r=alive

While screen is off, wifi would go to power save mode only
when wifi lock is held. If wifi lock is not held, wifi would
stay on and be turned off after |wifi.screen_off_timeout|.
We can more aggressively request the wifi driver to enter
power save mode before timed out. This is what the patch
intends to do.
Bug 1083528 - Add dev/stage Marketplaces to 2.0
Merge pull request #26310 from nullaus/v2.0

Merge pull request #26125 from nullaus/bug1077595
Merge pull request #26091 from elefant/dev/bug1093951-wifi-powersave

Bug 1093951 - Entering wifi power save mode when screen off. a=bajaj
Merge pull request #26129 from crh0716/1098684

Bug 1098684 - Hide the AP PIN item r=eragonj
Bug 1059650 - [Browser]Back button stops working after clicking '+' icon multiple times

* Doesn't rely on 'mousedown' event to get the tab ID, use 'tap' event to select tab ID directly
Merge pull request #26206 from clouserw/1083528.2

Bug 1083528 - Add dev/stage Marketplaces to 2.0  r=fabrice
Merge pull request #26228 from begeeben/1059650_back_button_stops

Bug 1059650 - [Browser]Back button stops working after clicking '+' icon multiple times, r=Dale Harvey
Revert "Bug 1059650 - [Browser]Back button stops working after clicking '+' icon multiple times"

This reverts commit e5b514a212b49013b7c18f31b7a7696a07cde13a.
Revert "Merge pull request #26125 from nullaus/bug1077595"

This reverts commit a2d1cbfa62f3880c15c84215bdc5fdad4e537486.
bug 1077595 -- With fixed unit test. a=testonly