Merge pull request #78 from oerpub/open-first-module-with-book

Open first module with book
Merge pull request #85 from oerpub/58351228-add-delete-a-module-from-a-book

add delete module ui that removes things from the nav
fix bug in pretty uuid generation
use pretty filenames for copied files
Merge branch '59164636-when-copying-a-file-it-needs-to-get-a-named-title-rather-than-just-the-hash' into testing