moving 'drawing' functions into their own folder + inital stab at edge captions #240
draw edge now takes a single edge selection or selection of edges...  not sure if this is valuable yet
refactor of drawEdges to create reusable utilities (e.g. drawEdge.styleLine) across app
Merge branch 'edgesRefactor' of github.com:hustonhedinger/Alchemy into hustonhedinger-edgesRefactor

Conflicts:
	app/scripts/alchemy/core/drawedges.coffee
Merge branch 'hustonhedinger-edgesRefactor' into v0.2