Model editor should retain correct isSpatial state when user leaves model editor page and comes back now
3JS border colors consistent
Added instructions on changing diffusion constant to Mesh editor page

Rearranged mesh editor page

Added convert to spatial button

Fixed bug where species & reactions subdomains selection stuff wrong in new models
Export n' import to public library now works for spatial
Merge branch 'spatial2' of https://github.com/StochSS/stochss into spatial2

Conflicts:
	app/handlers/modeleditor.py