Merge pull request #40 from Decio1/it-translation

Added Tethering italian translation
Added missing translations thanks to @ChristianTanner

Translation via Twitter :]
https://twitter.com/ChristianTanner/status/512200085934211073
new preference with related string. This prepare #44
added new constant for #44
added new preference action for #44
added new iptables rule in order to solve #44
bump version
New layout: tabbed

This will allow us to provide a more friendly interface, with
easily accessible information and settings.
switched main view
added new strings in English for new layout
Application fragment

Now it shows up two separated lists, one for enabled application (i.e.
the one we want to make through some Proxy), and disabled.

Missing: actions.
We have to do some more dev in order to get the following capabilities:
- user touch an app, it should go to the right listing, and iptables
  rules should be updated
- for enabled app, we have to add a new visual in order to let the user
  access advanced features

Also, for "home" tab, we must update display in order to use the
application settings.
added some debug
I was told "dark theme is bad".

Indeed, it may prevent some people to read things. More over, the "all
dark for hackers" may prevent other people to just try the app, as
"hell, it's all black, run away".

Thus… going to "light" theme.
removed old activity from AndroidManifest
cleanup and comments
some "design", though this will change. Probably
using CheckBox in order to get a visual return, and an access to isChecked method. #lazy
added onclick stuff in order to get the app more or less working
cleans old activity, xmls and adapter
new constants