Enable full search in GitBook spaces outside of preview or published sites

[JaniceManwiller]

As far as I can tell, the only times that you can perform any kind of search is either:

• In a published site
• In the preview of a CR

It would be nice to be able to perform the same sort of search in a GitBook space.

For example, if I know a new feature or a change to a feature is coming, then I might want to search for a specific term to make sure that during the planning process for the content changes, I can identify all of the locations where an update might be needed.

There is currently no space search that would allow me to do that. I could search the published site, but I tend to prefer to use the space for day-to-day so that I don't muddy the site usage statistics any more than I need to.