Generate views separately from nv init

[christiansmith]

nvl init should not generate views. Instead, a near future change to the server will enable it to use built in views if none are present in the project. We can create a command to copy views from the package if a user decides to customize them.

anvilresearch/connect#165

[adalinesimonian]

With #7 we now don't generate the views by default. Now we need to look into copying over views selectively.