Translation updates from Transifex

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Suggest using makepkg instead of mkaurball

pacman 4.2.0 supports .SRCINFO and generates meta data by default.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Update message catalog

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>