Versions page improvements

[connorhsm]

Blocked by #53

Regarding this page, https://twotech.twohoursonelife.com/versions

• Allow collapsing of entire version, rather than just by commit, to enable easier scrolling through history
• Potentially a method of viewing a list of versions without details until interacting further
• Allow clicking of version number to direct to a page with only that versions information
  • The route and page already exist, but is never linked to directly