s/Heroku/Docker/

Refresh UX

After performing a search, there's already a clear search link in
the view. Without a border around the search bar, the clear icon
looks a little lonely and strange all the way over on the right.
I offer that users have plenty of ways to clear text boxes and
we needn't give them this one.

Requires some small tweaks around various places we have icons in
use. In fact, this actually eliminates a lot of the small tweaks
in favor of more flexible alignment.

Rather than absolute positions and padding and whatnot just set
the width on the input element and set white-space: nowrap to ensure
it and the icon are side-by-side.

Better to use data attributes for signaling the intent than to
be overloading the CSS class.

Clean up and delete a few unneeded things.

Make the bridge service a factory instead

 - Remove unused support for options
 - Simplify the handling of scope
 - Make it a simpleton, and register the class as the constructor function.

Also updated all tests.

Kudos to @tilgovi for the feedback and ideas.