create a deleted state to project [#43721915]
after move project to deleted state we change the permalink to "deleted_project_ID" [#43721915]
added delete action on adm/projects [#43721915]
Admin can delete a draft / rejected project, and this project is not showing on adm/projects #changelog [Fix #43721915]

A way to clean the adm/projects :)
Merge branch 'master' of github.com:catarse/catarse