Huge steps towards the first release

As today, May 25, is a non-working day in Argentina, I thought it was a nice day to update ExpertCoder's documentation. However, I thought it was a cool idea to hack a bit on MonoUML first.

Needless to say, I spent the whole day coding and fixing bugs, which is a good thing because we're soon releasing a first alpha version. MonoUML is so addictive!

I fixed bugs #7 and #11, and maybe others. But the best is that now we're able to delete an element from the model and also from the diagram only - and yes, the diagram reflect those changes ;).