Translation: /fundamentals/performance/index.markdown
Removing DevTools doc and tidying up the index.markdown for test
Merge branch 'master' of github.com:google/WebFundamentals

* 'master' of github.com:google/WebFundamentals:
  Fixing hebrew translation
  Fixing hebrew
  Revert "Fixing the hebrew translation for the build"
  Fixing the hebrew translation for the build
  Update available langs
Adding build process doc
Update the schema link for the Github sample

cc @agektmr - I don't know if you need to make the og:image or schema image non-scheme relative, but feel free to do so if you do. The <img tag one should stay as it is.
Merge branch 'master' of https://github.com/google/WebFundamentals

Conflicts:
	.gitignore
	src/site/_config-devsite.yml
	src/site/_config.yml
	src/site/_contributors.yaml
translated performane/critical-rendering-path/index.markdown
fix typo in config files and delete trash file
rename performance/performance/critical-rendering-path -> performance/critical-rendering-path
revert .gitignore to previous version git
fixing og:image url for social site sharing
Merge pull request #867 from agektmr/discovery_and_distribution

fixing og:image url for social site sharing
Merge pull request #866 from CoderK/master

Translated "/fundamentals/performance/index.markdown" and "/fundamentals/performane/critical-rendering-path/index.markdown" into Korean.