Kill unused folder function.

This function isn’t used anywhere and isn’t right anymore — kill it.
Some color improvements and copy editing on the create page.
Fixes #685
Fixes #728
Merge pull request #727 from jcushman/folder-flag

Kill unused folder function.
closes #437
Merge branch 'develop' of github.com:harvard-lil/perma into develop
Remove old vesting code.
Mirroring fixes.
Retry and fail logic for proxy_capture.
Handle archive failure in single link JS.

Fixes #473
Retry/fail for PDFs.
Missing argument.
Merge pull request #734 from jcushman/status-check

Handle archive failure in single link JS.
Merge pull request #732 from jcushman/unvest

Remove old vesting code.
Merge pull request #733 from jcushman/mirror-fixes2

Mirroring fixes v.2
Merge pull request #735 from jcushman/capture-retry

Retry/fail logic for source and PDF capture.
Patched back in some styling on the the vest button
Merge branch 'develop' of github.com:harvard-lil/perma into develop
dark archive permissions fix
merge conflicts