(if not empty) to be saved in the inputline history.
Clear the input (but put in history) of say or say team when pressing escape.
Don't say or say_team if the text is empty.
functions out of bi_inputline.c. now somebody can be insane enough to
implement a qc controled console for the server ;) (more importantly, one
step closer to being able to have the server link with libQFcsqc (hah!))
