Update dependencies and dev support.
Update gem description in docs and gemspec.
Add changelog.
Bump to v3.0.0.beta
Rework internals and backend.
Now it only need assets for frontend.
Namespace model.
Rework frontend layout using bootstrap affix.
Ensure question unique within its category.
Sort category list by name and bigger text field.
Set max-with on nav so it do not overlap content.
Add cache and missing translation.