Basque translation update
pl translation update; PostgreSQL, SpatiaLite
[gui] Update Mac icons with latest vectorized logo

- Add qml and mldata (memory layer) to file extension mappings
Merge pull request #856 from Cracert/master

Polish translation update
translation update: id by Trias and ko_KR by BJ
Merge pull request #855 from asiersarasua/master

Basque translation update
More IT GUI translation
Working local server, no spawning
[tests] Add support for locally spawned fcgi process

- No building of spawn-fcgi or managing of spawned process, yet