[DRE-maint] ruby-sidetiq is marked for autoremoval from testing

[Debian testing autoremoval watch]

ruby-sidetiq 0.6.3-4 is marked for autoremoval from testing on 2015-08-23

It (build-)depends on packages with these RC bugs:
792065: node-mocha: FTBFS: Use CoffeeScript.register() or require [..] to require .coffee.md files