firefox: update to 58.0, kmozilla update to 5.0.2

- remove fixed patch
- remove enable e10s line in pref.js, is built-in now
- switch to mach build method
- update pgo-fix-kde.patch
- add new locale, ne-NP Nepali
3 jobs for master in 3 minutes and 50 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Package
canceled #271
PKGBUILD
build_repo

00:03:50

 
  Sign
canceled #272
signature
sign_pkgs

 
  Deploy
canceled #273
rsync allowed to fail manual
deploy_repo