Include issue tracker actions and wiki edits in project overview

At the moment the only way to get updates on actions taken in project issue tracker is through global newsfeed, which is populated from all projects you're following (no matter how much you actually care). Situation with wiki edits is even worse since you can't see notifications anywhere, except last revision date and single page history (there is no global wiki history).

Since way how "Overview" page is called, it would be nice to have actual overview on all project related actions - not only source code.