get a faster response from a change

in the previous implementation, the row-waiting-for-answer
class was removed only on the next poll. this should happen
more quickly.

+ remove some print statements

webserver.py

@@ -385,7 +385,6 @@ a {
                         title('older than 30 days')
                         showtitle = 2
 
-            print('A', args)
             out.append(f'<tr><th><a href="/?{"&".join(args)}">{key[1]} / {" ".join(devices)}</a></th>')
             out.append(f'<td>{daterange}</td></tr>')
         if timerange: