Fix insight urls

[mariusandra]

Changes

• Move all the previous URLs to this structure:
  • /insights - this used to be called "saved insights"
  • /insights/new - creates a new insight and redirects to it directly
  • /insights/123
  • /insights/123/edit
• Ths PR will probably never get merged, as it got too big. I'm keeping it up as a draft to have a reference I can look at when I make more targeted PRs.

How did you test this code?

• Never did, just kept writing code until it tested me.

[posthog-bot]

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[Twixes]

Closing in favor of #7201