Storybook re-applies container classes on each HMR update

[michael-martin]

All storybook components have been wrapped in Bootstrap grid classes. This allows them to be drawn in the same containers (including on responsive views) that they will be in the real app, and centers them vertically (Which is just nicer in general :) )

Unfortunately, the containers get added recursively each time HMR is applied, so you have to refresh manually instead.

This is due to a bug in Storybook: addDecorator in .storybook/config.js applied multiple times #284

Update our dependency when it is resolved.