Do not start/stop tor when touch on log view

Device: Nexus one Orbot 1.0.4-RC4-2010920

1. Switch to Log View
2. Touch on the screen

Unexpcepted: Tor stop/started after I touch screen.

I guess it's caused by the log view is not full fill the whole view, I can see it expanding when more log added into view.

BTW: the font size is too small in log view.

Trac:
Username: pen9u1n