guess timezone defaults based on mcc/mnc
bugfixes + code factorization + create an `apn_tz.json' database
Address review comments
Bug 871437 - change the value of Power save mode threshold to -1 for
never case. r=alive
Merge pull request #9985 from RudyLu/powersave/Bug871437-disabled_dataConnection

Bug 871437 - change the value of Power save mode threshold to -1 for never case. r=alive
Merge pull request #9965 from fabi1cazenave/tzGuess-bug873962

Bug 873962: guess timezone defaults based on MCC/MNC, r=RudyL
Bug 876389 - [email] Bug 828294 broke the linter, a=linter
Merge pull request #10021 from asutherland/fix-email-lint

Bug 876389 - [email] Bug 828294 broke the linter, a=linter
Bug 875393 - Homescreen delete icons is too big on non-hidpi devices . r=ochameau
Merge pull request #10022 from vingtetun/hidpi.homescreen

Bug 875393 - Homescreen delete icons is too big on non-hidpi devices . r...
[bug 876237] async storage [r=crdlc]