Add common place for core + plugin guice modules.
Hook up shiro aop annotations to core + all plugins, removed from siesta plugin.
Add @Timed to siesta test to verify annotations in plugins.
Added package docs to org.sonatype.guice.nexus w/recommendation to rename to org.sonatype.nexus.guice (unsure why it was every like this)
Merge pull request #734 from sonatype/common-guice-modules

Add common place for core + plugin guice modules