Since Sphinx 5.0.0, some intersphinx links need explicit inventory names or they won't be resolved correctly. See https://www.sphinx-doc.org/en/master/changes.html\#release-5-0-0-released-may-30-2022 and https://github.com/sphinx-doc/sphinx/issues/2068.

1. Add `import numpy as np` in rst files
2. Update NumPy repr for array (whitespace)
3. Update bytearray representation
4. Fix tiny output formatting (`<class ...>`, etc)
5. Format tracebacks
6. Skip random number tests or some platform-dependent outputs
7. Add `<matplotlib. ... at 0x...>` or similar output lines where
   missing
8. Set seed

* Add navbar link to numpy-tutorials.

* External links instead of tutorials stub.

* Update tutorial-svd link to intersphinx.

* Point tutorials to features, not applications.

* Fix linter

Also added links to the same content now hosted at https://numpy.org/numpy-tutorials

Closes gh-18409

- 3D Axes are created via add_subplot(projection='3d')
- There is now a `stairs()` function that's specifically designed for
  showing histogram curves
- Labels should be passed as keyword arguments to the plot functions
  instead of to `legend()`, which reduces the risk of mixing them up.
- ensure equal axis scaling in the meshgrid example

 * Remove reference to algebra in the intro text.
 * Link to linalg tutorial in Further Reading
 * Remove linalg heading + WIP from quickstart.

Replace WIP section with link to well-developed svd tutorial.