Cleaning up new Validate Beta

[misaugstad]

Resolves #2859

The major improvements from the previous version:

1. Adds a top-down map overlaid on top of the GSV window for added context (now included in all versions of Validate)
2. Adds zoom buttons
3. Adds comprehensive logging of button clicks, etc
4. The page is now set as Admin-only (for now). It can be access from the same place as AdminValidate (navbar drop-down)
5. Various styling improvements

Before/After screenshots (if applicable)

Before (NewValidateBeta)

After (NewValidateBeta)

Before (Validate)

After (Validate)

Before (AdminValidate)

After (AdminValidate)

Things to check before submitting the PR

• [x] I've written a descriptive PR title.
• [x] I've added/updated comments for large or confusing blocks of code.
• [x] I've included before/after screenshots above.
• [ ] I've asked for and included translations for any user facing text that was added or modified.
• [x] I've updated any logging. Clicks, keyboard presses, and other user interactions should be logged. If you're not sure how (or if you need to update the logging), ask Mikey. Then make sure the documentation on this wiki page is up to date for the logs you added/updated.
• [x] I've tested on mobile (only needed for validation page).