[#80323440] bug (maintenance) allow app to start with no maintence/auth setting
Merge branch 'bug-allow-app-with-auth-maint-undefined' of https://github.com/e-schultz/koast into e-schultz-bug-allow-app-with-auth-maint-undefined
update mongomapper to use .delete instead of .del
Merge branch 'e-schultz-bug-allow-app-with-auth-maint-undefined'