Updating LineageOS 15.1 for microG via TWRP + feature test

[Roboe]

@AnotherElk

or whether somebody will have to enter a bug for FP2 specifically to get it fixed.

Easy info about LineageOS 14.1 features not working in 15.1 (e.g. Exchange)?

Will be fixed in next release. Broke indeed because of August Android Security Bulletin. https://review.lineageos.org/#/c/LineageOS/android_device_fairphone_FP2/+/224858/ Chris