part of #76
replaces ember-easy-form-extensions and ember-validations by
ember-cp-validations and ember-form-master-2000
dropped webshim for input type time; should be readded to improve
user experience in browser which does not support this input field
yes (e.g. Internet Explorer, Edge, Firefox)
before it was done as computed properties of model
accessing encryption key in serializer is done via global application var.
this should be removed in long-term
