add Date ISO 8601 format

browser/main/Detail/SnippetNoteDetail.js

@@ -738,6 +738,7 @@ class SnippetNoteDetail extends React.Component {
             enableSmartPaste={config.editor.enableSmartPaste}
             hotkey={config.hotkey}
             autoDetect={autoDetect}
+            dateISO8601={config.ui.dateFormatISO8601}
           />
         }
       </div>

browser/main/lib/ConfigManager.js

@@ -39,7 +39,8 @@ export const DEFAULT_CONFIG = {
     showCopyNotification: true,
     disableDirectWrite: false,
     defaultNote: 'ALWAYS_ASK', // 'ALWAYS_ASK', 'SNIPPET_NOTE', 'MARKDOWN_NOTE'
-    showMenuBar: false
+    showMenuBar: false,
+    dateFormatISO8601: false
   },
   editor: {
     theme: 'base16-light',

browser/main/modals/PreferencesModal/UiTab.js

@@ -78,6 +78,7 @@ class UiTab extends React.Component {
         saveTagsAlphabetically: this.refs.saveTagsAlphabetically.checked,
         enableLiveNoteCounts: this.refs.enableLiveNoteCounts.checked,
         showMenuBar: this.refs.showMenuBar.checked,
+        dateFormatISO8601: this.refs.dateFormatISO8601.checked,
         disableDirectWrite: this.refs.uiD2w != null
           ? this.refs.uiD2w.checked
           : false
@@ -293,7 +294,16 @@ class UiTab extends React.Component {
             </div>
             : null
           }
-
+          <div styleName='group-checkBoxSection'>
+            <label>
+              <input onChange={(e) => this.handleUIChange(e)}
+                checked={this.state.config.ui.dateFormatISO8601}
+                ref='dateFormatISO8601'
+                type='checkbox'
+              />&nbsp;
+              {i18n.__('Date shortcut use iso 8601 format')}
+            </label>
+          </div>
           <div styleName='group-header2'>Tags</div>
 
           <div styleName='group-checkBoxSection'>