Fixing fingerprint listing

Ok, stopped being lazy and fixed the fingerprint listing for realz this time...

https://trac.torproject.org/7990
IOError when stopping tor

Yet another bug spotted by gsathya...

https://trac.torproject.org/7991
Expand the path to save log

Previously, saving to '~/foo.txt' would create a '~'
folder in pwd which wasn't intuitive. Now, the '~' is
expanded to the users $HOME dir.