More Funky Shells

Even more silly shell variants with different dart arrangements to get varied spread. 

Funky Shell Lite uses Sillybutts' original rival shell instead of donutcats' to get a tighter seal and reduce the number of rival rounds behind the half length darts. The original's concept was to use a rival round in the rear to push half length darts outwards.
The reverse and splitter shells launch darts behind 1 centered dart/round to try to get a different spread (In practice the reverse 3x seems to clump together).
The remaining shells arrange half darts in various ways to require less blaster power than rival rounds while still pushing off each other to create a wider spread. 

Also added some half length only shells with each barrel angled outwards.

Will fix the text once I get time.