Implement project view and canvas edit view

it creates a html5 canvas element and sets it's DOM-ID to the ID of the Canvas.

The Problem is: this is still work in progress, but since you need to integrate your implementation (like assigning users to projects and so on), I released it early. My exams are in two weeks and i can't guarantee to finish this until then and i don't want the implementation to be stuck because of this issue.

this is why the canvasView.html is still empty. But there will be code soon.