[DRE-maint] diaspora is marked for autoremoval from testing

[Debian testing autoremoval watch]

diaspora 0.5.5.1+debian-8 is marked for autoremoval from testing on 2016-04-30

It (build-)depends on packages with these RC bugs:
818461: ruby-rails-assets-favico.js: missing dependencies on ruby modules
818462: ruby-rails-assets-highlightjs: missing dependencies on ruby modules
820073: diaspora-common: modified shipped files: /usr/share/diaspora-common/{database.yml, diaspora.conf}