Graphical interfaces for biojava objects.

Where ever possible we have used java bean like interfaces. The model view paradigm is used, and in most cases the org.biojava.bio.seq and org.biojava.bio.alignment interfaces form the basis of the model. Often the actual rendering of the component is abstracted off so that the same class can render data in different ways by swapping in an apropreate renderer. This maintains consistant API even when the user sees very different images.