Changes the alarm to vibration.

Instead of playing an alarm and having to deal with waking the phone up
and getting user input to stop the alarm, I changed it so that the phone
will vibrate 3 times instead. This is more useful to me.
Change api version to 21.

Starting to transition project to material design.
Changes theme to material.
Changes sub button to material design.

Makes the button look like the floating action button that was
introduced with material design.
Removes button style.

I don't know what this actually did.
Makes the chronometer the button instead of the player name.
Adds click animation for the button.

The button now raises up to show that it's been clicked before the
player list opens.