Add additional tests from Ruby version.
Fix expected output; remove tests not yet ready.

Previous commit would have caused the example to fail by expecting
different output for the silence clause.

The tests removed were ones that *would* bring the Javascript tests to
parity with the Ruby tests; however they would cause the existing
example to break.
Add edit link for nitpicks.
Hide nitpick edit link unless current user wrote nitpick
Add edit link for comments, only visible to author
Make comment gravatars visually consistent with nitpick gravatars
Preliminary styles for edit pages.
Fix broken smoke test
Add more instructions to ruby:bob
typo fix
Update index.erb: publically -> publicly

Typo correction: publically -> publicly
Added approver to participants [fix #317]
Rust: add example implementation for bob
Improve implementation of is_yelling

Thanks to feedback on irc://irc.mozilla.org/rust from sanxiyn and
SimonSapin (as well as others)
Fix whitespace nitpick.
Rust: Move bob files into bob directory
Rust: Bob: Re-add unit test skips

I accidentally removed them in #367.
Python: Add bob unit tests
Python: bob: Add additional unit test
Python: bob: Add example solution