island generation, and beach joints
fix clipping on vr joints
fix minimap
Merge branch 'master' into generation
Merge branch 'master' into generation
Prise en compte de l'erreur "port ilegal"
Don't use Bytes until #125 is resolved

The other option was to change the Travis config to avoid 4.01,
but I suspect that the present change will be helpful to some developers.
Fixed Hashtbl size
config validity check, and fix #121
more config validity checking for tiles and units
more checks and cleaner island generation. Generation method can be chosen in settings_engine
Merge pull request #133 from GL-MPRI-2014/generation

Generation