draft page is automatically refreshed every 15 sec if page is visible or if page is made visible

[Keksike]

• Update README a bit
  • (This would still require a guide on XAMPP or Apache)
• Add new endpoint for fetching a draft (this is a POST endpoint even though it should be a GET endpoint, this is just coz im bad at PHP and didnt bother to make it proper)
• Automatically refresh draft page using the new endpoint
  • refresh every 15 sec if draft page is visible page
  • also refresh when user makes the draft page the visible page (when they switch to that tab on their browser)
• Very minor refactoring

This resolves https://github.com/shenanigans-be/miltydraft/issues/21

Would be great if someone else also tested that this works properly before releasing!

[shenanigans-be]

Hey @Keksike !

Thanks for this (and for the other PR!). Based on this I ended up implementing pretty much the same thing myself (with the exception that I get the data directly from storage (so: less server traffic) and leaving out the 15 second auto-refresh (because again: server traffic, and I feel like if people are that anxious for new results they'll just refresh every 5 seconds themselves anyway).