ToDo left:
refactor `datetimes` property of `create-options-datetime` component to
not cause whole list to be updated. This is not only a performance issue
but also UX: e.g. validation state is lost when another item is added.
ToDo:
Label validation state should not be bound to validation state of first element (option)
but to validation state of all elements. If any element has an error label validation state
should be error. Only if all elements are fine, label validation state should also be fine.
There might be use cases and it simplifies validation a lot.
Also fixes this missing translation message mentioned in #84:
> /create/options-datetime: There isn't any validation error shown when validation fails due to not enough times.
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)
started replacing ember-easy-form-extensions by ember-form-master-2000
and ember-validations by ember-cp-validations
using ember-form-master-2000 in old 0.2 release cause newer releases does not work with ember 0.12
should move to ember 2.x as soon as possible
therefore ember-easy-form-extensions has to be dropped and ember-i18n been updated
part of #76
