Add CSS source maps reference to docs. Closes #15211

Remove redundant .../blob/master/ prefix in markdown.

Fix copy/paste error

- update distribution file list with relevant files
- add a short reference to CSS source map purpose
- add link to Google Chrome developer network article

Remove #12548's entry from the Wall of Browser Bugs
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Since https://crbug.com/346051 has been closed as WontFix.
Bug is now documented in MDN:
    https://developer.mozilla.org/en-US/docs/Web/HTML/Element/Input$compare?locale=en-US&to=698785&from=693137
Refs #12548

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corrects IRC room

Fix #15194: Shrink media link area

add documenting in MDN as a step in browser bug handling process

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Document Savage cross-browser JS pull request tester bot
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Refs #12352, which is now implemented & deployed.
More info: https://github.com/twbs/savage

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http://crbug.com/429604 has been merged into http://crbug.com/175502

Clean up old `muted` references and switch to `text-muted`.

Don't line wrap event names in JS plugin docs

Switch to using sub-account of main Sauce account for Savage

Refs commit 6cfd811f.

consolidate relatedTarget docs in dropdown event docs

Adjust build scripts for Savage

Setup Travis event notification webhook for Savage
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