Made the thumbnail grid listen to appropriate events and also changed the input type from List<BufferedImage> to ThumbnailData.
Merge branch 'master' of https://github.com/scanniza/DesktopHipster

Conflicts:
	DesktopHipster/src/main/java/controller/Controller.java
	DesktopHipster/src/main/java/view/BrowseView.java