Remove duplicated line of code
Improve comment
Improve comment
Add m_rxfile_os for the currently recieved file and improve comments
recieve_file function and documentation enhacements
recieve_file functionality continued
test/server.cpp -> test/clearskiesprotocol.cpp
Prepare cs_send_file unit test
Adjust get message to request by files by content (checksum)
FileData m_paths refer to all the paths with the same content