Implementing updating component properties
Merge https://github.com/osung/kaist.tap.kaf

Conflicts:
	kaist.tap.kaf/src/kaist/tap/kaf/component/Component.java
	kaist.tap.kaf/src/kaist/tap/kaf/component/Rectangle.java
	kaist.tap.kaf/src/kaist/tap/kaf/views/ShapeCanvas.java