Language files update

Language files from old repo: https://github.com/cpw/ironchest

- pt_PT by @Vazkii from: https://github.com/cpw/ironchest/pull/39
- pt_BR by @wfcreations from: https://github.com/cpw/ironchest/pull/53
- el_GR by @vasouv from: https://github.com/cpw/ironchest/pull/45
- nb_NO by @terran87 from: https://github.com/cpw/ironchest/pull/50
- nl_NL by @TDarkShadow from: https://github.com/cpw/ironchest/pull/48
- zh_CN by @crafteverywhere from: https://github.com/cpw/ironchest/pull/49
- tr_TR by @toltol from: https://github.com/cpw/ironchest/pull/54
- et_EE by @ghost from: https://github.com/cpw/ironchest/pull/55
- de_DE update by @Vexatos from: https://github.com/cpw/ironchest/pull/51

These files shouldn't be lost.