Updated images to be 80x80
Added main string methods constants for the about window
Strings for the buttons in the main window have been replaced with the
ones contained in the iOS version
Updated main window interface
Columns now stretch to fill the whole window if they are smaller.
Added about activity and set parents
Configured the about activity in the manifest, set it's parent activity
to be the main window.
Updated main window with a callback for the about button
About button now spawns the about activity when clicked
Added the MATSOL banner drawable for the about activity
The about activity displays a bigger version of the MATSOL logo as a
drawable.
added the about.xml layout file
Contains a linear layout displaying version, copyright, contact and
author information
Added the class for the about Activity.