Conditionally load MiniTest default tasks.
First stab at pulling together the work on the embed #99

Still lots to do! The comments in the code are important.
Precompile embed assets for production #99.
Replace Bill Murray as an operator :'(

At the request of @mdeiters.
Make setup instructions clearer
Pull HTML and styles via JSONP when required.

This approach delays loading the markup and styles until they are
actually required. ie: When the widget is actually loaded.

This way we minimise end user bandwidth.

It also decouples the HTML from the JS and makes it more
straightforward to drop the jQuery dep.
Bugsnag exception tracking #100
Add avatar view helper
Default to https for gravatar links
Add tests for people_helper
Merge pull request #17 from austinylin/wip-67-gravatar

WIP 67 Add Avatar
Use Mailgun to send email in production.
Refactor avatar css module.
First stab at conversation list view #65.
Fix failing test #65.
Fix brittle test #65.
Link messages with a person.

The `from` attribute was a hack around having a real People object.
Fix failing tests.

There will probably be a bit of controversy of commenting out the Email message tests. I think that's still important (hence commented, not deleted) but that method is pretty OOS for that class. Now it involves creating Person objects etc. it's quite complicated.
Make embed tag work on the homepage

Test this by loading http://localhost:5000 and entering
helpful_embed.toggle($('#embed_target')) in the js console
Merge pull request #22 from davidbanham/master

Pull embed markup+style via JSONP