4801:  GeckoView update (nightly) (20191020-141037) r=pocmo a=MickeyMoz



4802:  Docs update (20191021-121133) [ci skip] r=pocmo a=MickeyMoz
Co-authored-by: MickeyMoz <sebastian@mozilla.com>

4786: Fix the Glean instrumented tests r=Dexterp37 a=Dexterp37

The tests were mistakenly re-initializing Glean when running each test, in order to send pings to
a local pingserver. However this is problematic as instrumented tests run as a separate thread in the
application process and Glean now asserts if it is initialized off the main thread.
Co-authored-by: Alessio Placitelli <alessio.placitelli@gmail.com>

4739: Closes #3720: Incorrect selection notification when session removed r=pocmo,rocketsroger a=csadilek

This fixes two issues: 

- The issue described in #3720 where removing the selected session does not cause a `onSessionSelected` notification

- Sending an unnecessary `onSessionSelected` when removing a session to the left of the selected session. In that case the index changed but it's still the same session that's selected and observers should not need to get notified that a session was selected
Co-authored-by: Christian Sadilek <christian.sadilek@gmail.com>

4784: Closes #4783: service-experiments staging endpoint is incorrect r=pocmo a=travis79
Co-authored-by: Travis Long <tlong@mozilla.com>

4782:  Docs update (20191018-122202) [ci skip] r=Amejia481 a=MickeyMoz



4785:  GeckoView update (nightly) (20191018-141230) r=Amejia481 a=MickeyMoz
Co-authored-by: MickeyMoz <sebastian@mozilla.com>

The tests were mistakenly re-initializing Glean
when running each test, in order to send pings to
a local pingserver. However this is problematic as
instrumented tests run as a separate thread in the
application process and Glean now asserts if it
is initialized off the main thread.

4767:  GeckoView update (nightly) (20191017-141848) r=pocmo a=MickeyMoz
Co-authored-by: MickeyMoz <sebastian@mozilla.com>

4762: For #4761 - Adds setting to control `forceUserScalableEnabled` r=csadilek a=boek



4769: For #2923: Don't crash if Intl.RelativeTimeFormat not supported r=Amejia481 a=csadilek

`Intl.RelativeTimeFormat` is in Nightly and Beta, but not yet on Release (until Monday). Not a problem as Fenix is on Beta (and R-B on Nightly) anyway, but good to catch errors anyway. This would also help if an article specified an invalid lang for instance.
Co-authored-by: Jeff Boek <jeff@jeffboek.com>
Co-authored-by: Christian Sadilek <christian.sadilek@gmail.com>

4746:  GeckoView update (nightly) (20191016-142200) r=pocmo a=MickeyMoz
Co-authored-by: MickeyMoz <sebastian@mozilla.com>

4745: Fail complete tasks faster so bors errors out faster r=pocmo,mitchhenges a=JohanLorenzo
Co-authored-by: Johan Lorenzo <jlorenzo@mozilla.com>

4760: Closes #2923: Remove moment.js from reader view web extension r=Amejia481 a=csadilek

Removes moment.js from reader view, and uses [Intl.RelativeTimeFormat](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RelativeTimeFormat

) instead to construct a localized reading time string.

Tested this with various sites in Spanish, Arabic, German, and English to verify this works as before. We could improve this more later to detect the language if the article doesn't specify but that's a separate issue (which also doesn't work in Fennec currently).
Co-authored-by: Christian Sadilek <christian.sadilek@gmail.com>

4744:  Docs update (20191016-121549) [ci skip] r=pocmo a=MickeyMoz
Co-authored-by: MickeyMoz <sebastian@mozilla.com>

4730: For #4560 Added BrowserMenuCategory menu item  r=pocmo a=mcarare
Co-authored-by: mcarare <mihai.carare.dev@gmail.com>

4731: Update jacoco to version 0.8.5. r=csadilek a=pocmo

A new version of jacoco was released and there's at least one improvement for Kotlin code:
> Branches added by the Kotlin compiler for functions with default arguments and containing arguments of type long or double should be filtered out during generation of report (GitHub #908).

Let's see if this works in automation and how that affects our coverage.

4732: Update Kotlin Coroutines to 1.3.2. r=csadilek a=pocmo

Pushing to taskcluster to see if we can just update.
Co-authored-by: Sebastian Kaspari <s.kaspari@gmail.com>

4738:  Docs update (20191015-121130) [ci skip] r=pocmo a=MickeyMoz
Co-authored-by: MickeyMoz <sebastian@mozilla.com>

4722: 1587405: Allow recording the empty string list r=mdboom a=mdboom
Co-authored-by: Michael Droettboom <mdboom@gmail.com>

4733:  GeckoView update (nightly) (20191014-141938) r=pocmo a=MickeyMoz
Co-authored-by: MickeyMoz <sebastian@mozilla.com>

4734:  GeckoView update (beta) (20191014-141938) r=pocmo a=MickeyMoz
Co-authored-by: MickeyMoz <sebastian@mozilla.com>

4698: Uplift string extensions from Fenix r=NotWoods a=daphliu

Fixes #4472 
Co-authored-by: Daphne Liu <daphne.liu97@gmail.com>