feature: static version

[freedit-dev]

• [x] inn: all list
• [x] inn: inn list
• [x] inn: inn user list
• [x] post
• [x] explore(inns list)
• [x] home page
• [ ] users
• [ ] tag page

[freedit-dev]

The feature may be removed:

• If a post is locked, the static page should be removed.
• It adds too much complexity