d27

The only difference between ordinary and extraordinary is just that little "extra".

Merge pull request from p2pu/signup_page_improvements Signup and LC creation improvements

Merge branch 'signup_page_improvements' of github.com:p2pu/learning-circles into signup_page_improvements

use weeks for duration on draft lcs; back button uses prev url; added AOS; fixed styling; added signup_count to API, merged upcoming and current LC tables on dashboard

save custom ls name and course description, update help text, make image preview a circle