Made it able for users to record a sequence by populating the array

User clicks record sequence, nagivates back to d-pad, pressed a series
of buttons, clicks back to control pad, stops the recording of the
sequence. The listeners stop and the array is shifted so that silience
is removed from the beginning of the array
Moved code manage sound function to global class for use with sequence recorder
moved sequence code to new file for better oraganization

when user clicks play, look through the array for the number then play
that sound!
YAY!!! CAN SUCCESSFULLY STORE AND PLAY BACK A SEQUENCE!!
removed unncessary variable