Finishing the refactoring, before embarking on Chapter 4

The activity name somehow had the whole package name, which
doesn't seem to be required. Could be wrong, though.

Signed-off-by: Elliot Voris <elliotfriend@gmail.com>
Chapter 4: Added real timer functionality to this thing!

The timer functionality now works with the start/top buttons

I also changed some of the application settings and the app
name ("chapter 3").

TODO: display the running timer.

Signed-off-by: Elliot Voris <elliotfriend@gmail.com>
Chapter 4: Added vibrating functionality to timer activity

The phone will now vibrate (if it's capable) a the following
intervals:

vibrate 1 time  at  5 minutes
vibrate 2 times at 15 minutes
vibrate 3 times at 60 minutes

Signed-off-by: Elliot Voris <elliotfriend@gmail.com>