diaspora* 0.7.13.0

Security

• Fixes USN-4274-1, a potential Denial-of-Service vulnerability in Nokogiri. #8108

Refactor

• Set better example values for unicorn stdout/stderr log settings #8058
• Replace dependency on rails-assets.org with custom gems cache at gems.diasporafoundation.org #8087

Bug fixes

• Fix error while trying to fetch some sites with invalid OpenGraph data #8049
• Don't show sign up link on mobile when registrations are disabled #8060

Features

• Add cronjob to cleanup pending photos which were never posted #8041