Final steps in dev mode

Added symbolic linking back in for non-windows environments - but for wars only. This ensures that when building on linux or mac, all JSP changes will be available immediately without restart or sync.

All other aspects - modules etc - have been covered in dev mode by Matias' latest changes. This completes the circle.

Windows users can still use the "sync" task to get their JSP changes updated without having to redeploy or restart the container.