Moves all tests to junit4
Enforces Java 1.7 on the Forge API plug-in

The Forge v2 API is using a date format with a time zone expressed
as ISO-8601. The parsing of such time zones was introduced in
SimpleDateFormat in Java 1.7.
Moves ill placed repository definitions to parent pom.
Adds Geppetto Validation project
Merge branch 'github-publish' into dev