We can now generate links to give people read access to a book.
- (Fix) Strange scroll behavior in edit page
- (Features) Read only mode
- tools are dynamically picked by access level
- see new field in /book/:id/edit/access
- (Fix) Fixed a bug where the snips to place where not updated when a user adds a new snip
- (Fix) Overlay sometimes persisted on page change
- (Feature) Reenabled old live updates for drawing (might be disabled again depending on performance)