testIsValid depends on the speed of Runtime's exec: sometimes it's quick
and passes (because it changes the date correctly) and sometimes is
not. A waitFor doesn't fix the issue, it waits forever.

Gradle doesn't invoke updateIcsOpenVpn task unless the task is
explicitly invoked. I needed to put all the related tasks into the
configuration phase, rather than on the execution one.

It's enough to reflect the fact that the button leads to a dialog from
which the user can both log in or sign up.

I don't use the eip status receiver because it wasn't reliable on
timing: updated messages were arriving before the receiver was notifying
a new state.

Current and last ConnectionStatus is now managed at EIP.

More refactoring on the eip fragment, now there are separate methods for
setting up the UI depending on the message received.