Logic separation. Now servlet runs service to execute groovy script. Tha...

Now servlet runs service to execute groovy script. Tha...nks to this we can not only use servlet for executing scripts but also inject service (and use all nice feature the groovy console has. For example bindings, response as json etc)

We really like groovy console but we also need separate service. This doesn't change original purpose of the project but makes it more flexible