Add support for Lektor extensions, additional tool config rcfiles and common plain-text meta-files lacking extensions

[CAM-Gerlach]

• Add .lr files from the Lektor static CMS, and .lektorproject which == INI
• Add several config/rc files without extensions from additional relatively popular linting/etc. tools that have pre-commit hooks (.browserslistrc, .codespellrc, .csslintrc, .gitlint, pylintrc). I took care to only add such files where the un-extensioned config file had only one defined file type, as opposed to cases where it could potentially be in one of several
• Add a few additional common plain text meta filenames (CHANGELOG, CONTRIBUTING, COPYING.LESSER NEWS) with relatively wide usage

There was one ambiguity here: Should ordering the NAMES dict be case-sensitive (i.e. should capitalized letters have higher precedence than lowercase)? Currently, this wasn't possible to infer from the existing order, as there were no cases I could find where this would have made a difference to ordering, but this PR adds one such instance (pylintrc). I arbitrarily picked non-case-sensitive ordering for now, but I'm happy to change it if desired, just lmk. Thanks!

[asottile]

• rebase
• fix the test that's failing
• provide links in the PR to the individual configuration formats

[CAM-Gerlach]

Thanks for the quick review!

rebase

Done.

fix the test that's failing

Not sure what you mean, all the tests were green before and are now?

provide links in the PR to the individual configuration formats

Done, also updated for the changes you mentioned.

[asottile]

fix the test that's failing

Not sure what you mean, all the tests were green before and are now?

I added a test on master -- you fixed it as part of fixing one of your two typos :)

[asottile]

[CAM-Gerlach]

KITTEH 😸

[asottile]

miao miao

[CAM-Gerlach]

Meows in Spanish

Maybe a little out of scope, but why not defer the request until the click event fires for the approve radio button? Seems like it would save a lot of extra requests when doing loading any PR page without approving it, especially when clueless contributors like me keep making typos, heh. Too much latency needing to wait for the request after clicking approve, or just not optimized?

[asottile]

too much latency, yeah