Fix missing representations in example projects

Description

In the example provided with PerOpteryx several projects have the modeling nature but lack a representation file, leading to validation failures in Eclipse. Either add a representation file or remove the modeling project nature. 

Environment

None
Done

Assignee

Yves Kirschner

Reporter

Jörg Henß

Labels

None

Requirement Category

None

External issue URL

None

Fix versions

Priority

Minor