When a new version is created, the latest version is updated, then
the new one is made. If making a new one fails (most commonly due to
a name conflict), the latest version is left in a broken state. Set up
the new middleware to revert changes to latest version in this case,
and update the level handler to use the middleware. Also added
warning logs if models do not have editableProperties or postEditableProperties
set.
- move and rename files
- use associative arrays which store handlers for 'dynamically'
load module from de db route
- store models_path in test/server/common,
a global model variable has the same name that the filename of the model
