Fix cli crash with Python 3

This worked in Python 2 because type(4 / 2) == int but in Python 3 type(4 / 2) == float

mycroft/client/text/main.py

@@ -420,7 +420,7 @@ def scroll_log(up, num_lines=None):
 
     # default to a half-page
     if not num_lines:
-        num_lines = size_log_area/2
+        num_lines = size_log_area // 2
 
     if up:
         log_line_offset -= num_lines