V3 documentation changes

[z3dev]

Lots of documentation changes to V3 API, imports, etc.

The new V3 website can be found here. (NOTE: Not official.. Not HTTPS)

http://72.62.112.88/v3/

There are no logic changes. All tests pass.

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Does your submission pass tests?

[z3dev]

Tons of changes. You don't need to review everything.

But please see the new website, as that has the documentation on-line. You can browse.

Some interesting changes...

• I moved the boolean functions under 'modeling'.
• I moved the geometries up. For example, slice is now 'modeling/slice' (previously 'modeling/geometries/slice')

Questions:

• Should everything be under 'modeling'? Is one huge list confusing?
• Should the sections, such as 'hulls', 'primitives', etc be maintained? Simplified?

NOTE: This is the documentation hierarchy, not the code or import hierarchy.

FYI. There's a HUGE BUG in jsdoc that prevents the parameters from being shown. A fix is planned.

[hrgdavor]

organizing into packages makes sense to not have huge list, but is extra burden trying to remember also the prefix .
maybe a meta package: modeling.all that is bunch of aliases saying where the original is. dunno, I am conflicted here.

The PR itself is ok.