NL translation

NL translation
Merge branch '1.1' into 1.2
turkish language package from SerkanBektas
Merge branch '1.1' into 1.2
[Upg] more informations about contributions in docs
Merge branch '1.1' of github.com:MrJuliuss/syntara into 1.1
Merge branch '1.1' into 1.2
Merge branch '1.2' of github.com:MrJuliuss/syntara into 1.2
Merge branch '1.2'