Adapt Eiffel-ViCi to use Eiffel-ER instead of Dummy-ER

[tobiasake]

Description

Eiffel-ViCi need to start to use Eiffel-ER instead of Dummy-ER.
Adapt Eiffel-ViCi to comminicate with Eiffel-ER.

Move out all configuration from the code to application.properties file so Eiffel-ViCi becomes configurable.

Add an Url address property for the new Eiffel-ER functionality in application.properties file, src/resources/application.properties.
e.g : "er.url=http://localhost:8085"

Motivation

Exemplification

Benefits

Possible Drawbacks

[jonathanwahlund]

@tobiasake check out pull request #43
Eiffel-ER url application property: eiffel.er.url
A new separate issue(s) should be created for additional application properties if necessary.