DRY: (re)use hosts_list.html in list-all.html
refactor user_is_owner into its own function and improve tests
DRY: refactor tests
refactor: DRY in Moderator test cases
allow Moderator to edit existing hosts
Merge pull request #14 from mvo5/feature/admin-list

Feature/admin list
Merge branch 'master' into feature/pip_freeze