* Site improvements.
- For SVG images, authors no longer need to specify image ratios
(which is a constant source of errors)
- Move more icons into the new icons.svg file to further reduce
average page load times.
- Rationalize Istio logo file names.
- Improve underlining behavior for sidebar headers and the RSS feed
Subscribe link.
- Made the RSS feed subscribe link open in a new tab.
- Increase the constract ratio for some elements in dark mode
text blocks (namely, YAML field names)
- Reduce the "brightness" of the light bulb icon which helps it
not pop so much in dark mode.
- Optimize the fonts we load and the order we load them in so as to improve page load time and
reduce the initial render time.
* Sadly, embedding SVGs into the HTML results in duplicate element ids, which is invalid HTML :-(
Remove a bunch of entries that shouldn't have been in the spelling dictionary
and correct content aoocrdingly.
I'm disabling the Chinese spell checking for now, since I'm not able to fix the
spelling errors that emerged there. Once this PR is in, I'll file an issue to get
those spelling errors addressed and checking reenabled.
* use kubectl consistently throughout for Istio API resource C.R.U.D operations
xref: https://github.com/istio/istio.github.io/issues/1843
* fix typo
* review comments
* remove unnecessary instructions to use `replace` instead of `create`
* fix linter in `zh` content