Fix newsletter scheduling related required proptype issues

assets/js/src/newsletters/send/date_text.jsx

@@ -75,7 +75,7 @@ class DateText extends React.Component {
       jQuery.datepicker.parseDate = function parseDate(format, value) {
         // Transform string format to Date object
         return MailPoet.Date.toDate(value, {
-          parseFormat: this.props.dateDisplayFormat,
+          parseFormat: this.props.displayFormat,
           format,
         });
       };
@@ -163,7 +163,6 @@ DateText.propTypes = {
   value: PropTypes.string.isRequired,
   disabled: PropTypes.bool.isRequired,
   validation: PropTypes.object.isRequired, // eslint-disable-line react/forbid-prop-types
-  dateDisplayFormat: PropTypes.string.isRequired,
 };
 
 DateText.defaultProps = {

assets/js/src/newsletters/send/date_time.jsx

@@ -5,7 +5,11 @@ import DateText from 'newsletters/send/date_text.jsx';
 import TimeSelect from 'newsletters/send/time_select.jsx';
 
 class DateTime extends React.Component {
-  state = this.buildStateFromProps(this.props);
+  constructor(props) {
+    super(props);
+
+    this.state = this.buildStateFromProps(props);
+  }
 
   componentWillReceiveProps(nextProps) {
     this.setState(this.buildStateFromProps(nextProps));
@@ -74,7 +78,7 @@ DateTime.propTypes = {
   onChange: PropTypes.func,
   name: PropTypes.string,
   disabled: PropTypes.bool,
-  dateValidation: PropTypes.objectOf(PropTypes.string).isRequired,
+  dateValidation: PropTypes.object.isRequired, // eslint-disable-line react/forbid-prop-types
   timeValidation: PropTypes.any, // eslint-disable-line react/forbid-prop-types
   timeOfDayItems: PropTypes.objectOf(PropTypes.string).isRequired,
 };

assets/js/src/newsletters/send/time_select.jsx

@@ -34,7 +34,7 @@ TimeSelect.propTypes = {
   value: PropTypes.string.isRequired,
   disabled: PropTypes.bool,
   onChange: PropTypes.func.isRequired,
-  validation: PropTypes.object.isRequired, // eslint-disable-line react/forbid-prop-types
+  validation: PropTypes.object, // eslint-disable-line react/forbid-prop-types
 };
 
 TimeSelect.defaultProps = {