Enable bootstrap
This is purely temporary, but the motivation is as follows.
So far, before xpub was started, pubsweet components were made with bootstrap enabled and to some extent or the other use it.
In order to make components that Coko has built usable across the systems that it's building, let's enable bootstrap until:
- react-css-themr is implemented fully in pubsweet
- we have a theme that all in-house projects can use
Then we can get the projects in sync to remove bootstrap and start using the theme.
The goal is to have no time where one component is not reusable in other systems.