support subprojects - Githubissues

Sometimes the same mailing list is used for multiple projects or different branches for the same tree.

[ ] Add the ability to have a specific marker per-patch.
[ ] Add the ability for the registered user to move a patch from a subproject to another.
[ ] Add a mean for the importer to directly put the patch in the right subproject.
[ ] Change the summary UI to the sub-projects and the related statistics.

lu-zero / plaid