Check for fileno attribute in _tty_width function

When using Options parser within a unittest.TextTestRunner with buffering enabled (buffer=True), it fails with: 
AttributeError: StringIO instance has no attribute 'fileno'

This change will prevent this kind of error.

Make firewall.py use the right params for islocal

Patch/osx improvements

This icons are using scale independent PDF template images which make menu item
icon look great on both Yosemite light & dark theme. Also adding new flatter
and higher resolution app icon.

This ensures application is not leaving empty status item.

Importing everything (*) from AppKit takes a while, since we got 3 scripts
doing that, startup could take up to few seconds. This change makes script
import only what they need, improving startup time to fraction of second.

Fix the most blatant issues of the generated .deb

Otherwise the package is only installable on current Ubuntu releases
and neither on future Ubuntu releases (which will use systemd) nor on
Debian and other Debian derivatives (where the administrator can
decided which init system is used).

Fix clone url in README

fix sudo issue in yosemite

Yosemite support

(Slightly modified by apenwarr)