More example graphs work.

Finish implementing new graphs and drop a lot of original, old graphs.
These graphs provided little “example” and were mainly used for testing
purposes, or often were repeated several times. To offer a smaller
selection of graphs that are easier to view and navigate through, I’ve
removed a lot of non-essential ones.

On another note, the Tester page has been fixed. Once I’ve finished
work with the graphs they’ll properly link over to the tester.