Optimize white space on the main Notebook page

[meminens]

Describe the feature you'd like
Better utilize the white space on the main Notebook page. For example, provide user option to add more rows and columns. If a notebook contains dozens of pages, it doesn't make sense to force user to scroll down on the page to reach the desired page link. Demonstrated in the screenshot below.

Describe the benefits this feature would bring to BookStack users
Prevent unnecessary scrolling
Optimize white space
Quickly locate the desired page link

Additional context
See above.

[ssddanbrown]

Will be considered in the next design update. Perhaps a grid view brought down to the book and chapter listings.

[ssddanbrown]

Since the design update has now been released many whitespace efficiency improvements have been made:
https://www.bookstackapp.com/blog/beta-release-v0-26-0/

I think the main thing remaining might be a different view option for the books listing which is already covered by #530, Therefore I'll close this.