Automatic Reassign of POM embedded repositories.

This is discussed at: http://www.nabble.com/Re%3A-MRM-462%3A-configuring-different-types-of-repositories-differently-p12154720.html

Example:
1) Pull up a report of all remote repositories defined in the poms.
2) Select one of them, and a managed repository, hit 'reassign repo' button.
3) A remote repository is added to the archiva configuration.
4) A proxy connector is added between the selected managed repo and the new remote repository.
5) Then all embedded references to that remote repository now point to the managed archiva repository URL.
6) A reference is added to the auto-convert consumer that all new occurrences of this repository are converted.