adds new favicons
redirect all http traffic to https
use https gravatar and link to //product from profile

both these are to fix https stuff
remove // in link from profile to product page
remove redirect.
use heroku X-Forwarded-Proto header to redirect http traffic to https.
add logging
add more logging
try a thing
more logging.
get rid of a few hardcoded http instances in urls
remove pointless page.getBaseUrl() method.
temp
Merge branch 'donate-button'
deduplicate the oldest copy of an item
add next_refresh and refresh_interval columns to db

ALTER TABLE "user" ADD next_refresh timestamp; update "user" set next_refresh=last_refreshed + interval '7 days'
ALTER TABLE "user" ADD refresh_interval Integer; update "user" set refresh_interval=7
make updater use next_update column to update periodically every day
accept csv tiids in a POST
Merge branch 'master' into fixes