always load css and js sources using the same url as the page that is being visited so there is no http/https mismatch.
add construct_page hook
doc additions
Merge branch 'master' of https://github.com/friendica/red
categories should already be html encoded - ensure this is the case but don't double encode
prepare for Comanchification of mod_photos
Merge pull request #242 from git-marijus/master

move affinity slider to widgets.css and minor cleanup
Merge https://github.com/friendica/red into zpull
Merge branch 'master' of https://github.com/friendica/red