Added Anchors to Bachelor / Master and Semester Headings

Implements #60 (closed)

Using <a id="something" href="#something">Something</a> works fine if the content is already loaded. If that's not the case tryScroll checks wether the element exists on every mount / update until that element is found. I styled these links with color: black to prevent them being rendered using a blue color (&:link is needed because otherwise I would have to use !important).