General Tidying

There were weird repeated files in the last commit. This is an attempt to remove
them.
Created order-reversing list duplicate remover.

Rather than creating a method to preserve list order whilst removing duplicates,
it was easier to create one which reversed the order. Using 'reverse' to fix the
order is a trivial fix/ work-around. This means that edgeCons now produces
properly ordered EArrays.
Merge branch 'master' of https://github.com/cameronmcgarry/sevDeg

Conflicts:
	bin/GraphTools.hs