Rename Droidium Container artifactId

Current org.arquillian.container:arquillian-droidium-container-depchain:pom does not follow naming for other containers.

It would be great to remove -depchain and make this non pom but jar artifact.

Note that depchain does not make much sense here anyway. You either want the container or don't wont the container. Depchains are used to simplify usage of tools that are often extended and consists of many components.

For the same matter, it might be reasonable to just rename *-impl artifact for the container to be the new depchain replacement, that is arquillian-droidium-container.