Remove some Emacs & Vim modelines
This might be a bad idea, especially on the webidl side. However, we started talking about the idea that modelines are a lint error (https://github.com/servo/servo/issues/10719), and these changes would be required before enabling a modeline lint.
If it bitrots, it's easy to recreate with
```
find * -type f -exec sed '/- Mode:/d' -i {} +
find * -type f -exec sed '/ vim:/d' -i {} +
git checkout -- python/tidy/servo_tidy/tidy.py
git checkout -- python/tidy/servo_tidy_tests/spec.webidl
git commit -a
```
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This is a new attempt of #10586, after Simon Sapin's great cleanups in #10749 has landed. I have adjusted the changes to the new structure that was introduced, and also only done a few of the longhand ones. Will certainly continue on this as soon as we have a basic agreement that this style is reasonable.
Implement scroll, scrollLeft, scrollTop and friends, addressing issue #9650
This is a work in progress to solve https://github.com/servo/servo/issues/9650. Thanks a lot for helping the review.
- [x] scroll
- [x] scrollTo
- [x] scrollBy
- [x] scrollTop (setter and getter)
- [x] scrollLeft (setter and getter)
The setters will be implemented in another PR after this is merged.
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Lower the logging level of a really chatty fn
Reduces the amount of spew when running with settings like `RUST_LOG=script=debug`.
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Dedicated panic channel
Added a dedicated panic channel, and removed the panic messages for the script and layout threads. This is needed so that other threads can report panics, which is part of #10334.
Note that this PR includes the commit from #10572, so should land after it lands.
r? @Manishearth
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Issue #10574 Use the document base url in img
add a test with base path set to the resources path and an img with a cat and the reference directly to the image
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