Likes module: simplified session hash
Likes module: simplified session hash

Cookies no longer used to store hash. Likes not vulnerable to cookie
spoofing or header spoofing, but session hash will aggregate logged-out
visitors behind a proxy (logged-in users will have likes uniquely
associated based on user ID). Created unique index to speed fetches of
post_id, user_id pairs.

xenocrat/chyrp-lite,xenocrat/chyrp-lite