Updated gitignore
added stat files at the end of sender
TEST protocol
corrected comments
cleanup and update of comments
increment and decrement counter of total Data_Threads count
added joining terminated threads directly in case 200
restore while(1) loop
Data_Thread - if-elseif-else replaced by swith case break
removed absolete block in Data_Thread
added possibily to have status_run = 2 when thread gets at least one request
clean up absolete comments
simplification of code, case 5 6 are the same