[WIP] Import/Export Services

[ThomasBuchinger]

This script adds support for importing/exporting Services
At the moment, there are a couple of things wrong/specific to our use case, that I would need to fix, before releasing it to the public, but I wanted to know if you guys would be interested in it at all.

Stuff to fix:

• it supports renaming certain elements. The feature is pretty handy, but it needs to be implemented differently in a more general setting
• it is very explicit in the attributes it imports and how it goes about it. There is probably something we can offload to rails
• Since Services cannot be uniquely identified by name, the script sets a custom attribute with the current service-id to identify already existing Services
• it doesn't update existing services
• add any additional associations a service might have (e.g. generic objects)
• add CLI options to control which parts should be imported