Fix whitespace

[14mRh4X0r]

From the quick look I've taken, it shows mixed use of tabs and spaces as indenting, and some trailing whitespace (e.g. in FS_Commands.java). This is quite annoying when viewing the source, and takes up unneccesary space!

[Stefan Steinheimer]

Made /god implementation slightly less ugly. /god now survives switches to and from creative mode, and can be set while in creative mode. Cleaned up whitespace (see issue #12).

→ <<cset 7c8edcfe7690>>

[Stefan Steinheimer]

I'd claim that it's a hidden whitespace program, but you'd probably test it, so I have to admit that I've been negligent there. Fixed (for now) in commit 7c8edcf, but I'll leave it open as a reminder.