<DE2> Button Functionalities + animation implemented

action buttons have working functionality.
We can play song by clicking song title from the bar.

Conflicts:
	software/StereoSystem/Button.c
	software/StereoSystem/Button.h
	software/StereoSystem/StereoSystem.c

it may need more tests
<DE2> VGA - Pls update BMP files in SD

PLEASE UPDATE FILES IN YOUR SDCARD before running this code.

On this commit:
1. Modified the implementation of button animation,
2. If user choose to play songs from list, syncStop() is called before
syncPlay()
3. Play after pause continues the song from current position but it also
replays the song from beginning <need to fix this>

Conflicts:
	software/StereoSystem/Frame.c
	software/StereoSystem/StereoSystem.c
<DE2> Fix some minor problems
pause at correct position while play button will resume the song
song position reset after a song is played
syncSetVolume will not set both song and sound's volume