Bump version to 1.0.4
Update Spanish translation from strel
Add Brazilian Portuguese installer translation from swperman
Update Danish translation from Mikkel Kroman
Add protobuf support in build process
Add ControlChannel.proto
WIP Add Useful.h
WIP Add Channel
WIP Add ControlChannel
WIP Connection
WIP Add Connection in Channel and ControlChannel
WIP Start implementing request/response functions in Channel