Add a script to support the Marionette inspector.

Resolves #168
Hide Gistbook menu when unauthorized.

Resolves #163
Fix production build.

Resolves #165
Remove out-of-date Application comment.

Also adds a comment for the dev module. Resolves #167
Add a contact page.

Resolves #164
Add case-insensitive username comparison.

Resolves #170
Remove query parameter from favicon.

Resolves #182