Enhancement: add erlang recipe

 * imported: v1.5.6, https://github.com/opscode-cookbooks/erlang/commit/2af91e4650c1411fbf8e44626b1a548f777926c4
 * ran rake rubocop to fix offenses
 * deleted dependencies on yum/redhat based distros
Refactor: move test setup into Makefile
Fix: CS
Update: ignore erlang and rabbitmq (too much to fix)
Enhancement: add rabbitmq chef recipe

 * fixed small offenses
 * version v3.4.0, https://github.com/jjasghar/rabbitmq/commit/b71c0a068419ad10324e8d13b517fafbf373c0c3
Enhancement: recipes for the service stack
Enhancement: move gearmand into service
Update: add recipe until all references are updated
Clean-up
Fix: re-import rabbitmq
Enhancement: add easybib::setup
Fix: correct version of imported cookbook

cc @fh
Enhancement: delete default guest account on prod/stage
Update: delete guest user
Fix: this would be a good idea if we were not on Chef 11.10
Enhancement: ensure vhosts and users are managed
Fix: env config for sitescraper
Fix: rubocop
Fix: whitespace
Fix: add documentation for external recipes