adding logic to play tuples.
improvement
layout arrangement.
layout-management.
minor fixes.
converting buttons to Jlist.
layout improvement.
alignment fixes.
alignment.
alignment.
Merge branch 'master' of git@github.com:ShrutiTiwari/octopus.git

Conflicts:
	music/src/main/java/com/aqua/music/model/cyclicset/CyclicFrequencySet.java
	music/src/main/java/com/aqua/music/view/components/QuizPanel.java
	music/src/main/java/com/aqua/music/view/components/RehearsePanel.java
	music/src/main/java/com/aqua/music/view/components/UiDropdown.java
	music/src/main/java/com/aqua/music/view/components/UiTabbedPane.java