FreeNIBS-2.2.3 and FreeNIBS-3.0.0-b4 released

FreeNIBS-2.2.3 and FreeNIBS-3.0.0-b4 released.
FreeNIBS-2.2.3 is a last release in a 2.x branch.
We have uploaded a easy to install package with a built in web-interface also