Merge pull request #143 from greboid/master

Tidy up AliasManagerLinker.
Collate plugin PMD reports into one dir.
And ignore the PMD dir.
Merge pull request #144 from csmith/master

Collate plugin PMD reports into one dir.
Kill some unused fields/imports.
Merge pull request #145 from csmith/master

Kill some unused fields/imports.
Tidy up feedback model listener.