Remove warning that prior to Istio 0.8 Helm was unstable.
Since we are on 1.0, and can expect people to upgrade from 0.8,
this warning doesn't seem relevant.
Also, Helm upgrade from 0.8 to 1.0 has been validated. Also
remove that warning.
Istio intends to lead with automatic sidecar injection and
as such, there is no good rationale to document how to turn
sidecar injection off. Still, as a followon PR, it may make
sense to document 5-7 different customization scenarios.
ingress v1 is gone - no sense describing it here.
- Add <github_file> <github_blob> and <github_tree> to make it simpler to link to the right
place on GitHub.
- Use these new sequences throughout the docs.
- Also, fix bad HTML generated for the TOC in certain cirsumstances.
- Fix extra blank line inserted at the bottom of indented code blocks.
- Remove What's next sections since we now have auto-generated See also sections
- Fix a few incorrectly capitalized headers, "istio", "kubernetes", "sidecar"