Unify a number of inconsistent files to 4 space soft tab

After looking at a bit of the code, I was noticing a lot of mixed tabs and whitespace; rendering it difficult to read on github.

I've done a bit of cleanup work on net/systemD/potlatch/* to unify code on 4 space soft tabs - and fixed inconsistent styles in a number of places as well.

If that's... not the actionscript default, happy to go make it tabs or whatever - just so it's consistent.