Implemented ignore time button after failstart
Added finish round function

Button "Finish round" is only active in non-question mode. It just
triggers information control to show round results (results must still
be implemented).
Added round settings

Automatically finish round after N questions, or not finish
automatically at all.
Connected timer start with joystick input and button refresh

Now joystick input starts listening always when game timer starts
ticking (connected by signal), and timer button changes "Start!"/"Stop!"
automatically;
Rules now cannot be changed during the round