Fix a typo in javadoc
Make resolver ignore artifact types

Artifact types are not known when resolving artifacts, so repository
should be able to provide a way to ignore stereotypes.
Ignore artifact types during resolution
Delay effective POM simplification

Effective model must be simplified after dependency extraction in
order for Java version extraction to work as expected (rhbz#1022939).
[test] Add explicit namespace to POMs
Add ModelReader component interface
Implement DefaultModelReader
Implement MavenModelReader
Use new ModelReader component
Implement ModelReader for Ivy modules
[test] Implement basic Ivy installer test
[test] Test Ivy dependency exclusions