Format of the inherit call doesn't match the guidelines

[jbphet]

This is a fairly minor formatting thing, but it improves the readability of the code. The PhET Development Overview document (see https://docs.google.com/document/d/1odXkliRagq0zuf1_NdOtQ2BrkC9hwlISnPi2y-dKdrk/edit?usp=sharing, section entitled Code and Documentation standards/style) specifies that there should be a space between adjacent methods in the inherit call. Much of the code doesn't adhere to this and should be cleaned up.

This was found during code review, see #29.

[jbphet]

I went through the code and fixed this, closing.