Fix light card with wrong domain entity. Show custom cards if there is entitites

lib/cards/error_card.dart

@@ -2,12 +2,21 @@ part of '../main.dart';
 
 class ErrorCard extends StatelessWidget {
   final ErrorCardData card;
+  final String errorText;
+  final bool showReportButton;
 
-  const ErrorCard({Key key, this.card}) : super(key: key);
+  const ErrorCard({Key key, this.card, this.errorText, this.showReportButton: true}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
+    String error;
+    if (errorText == null) {
+      error = 'There was an error showing ${card?.type}';
+    } else {
+      error = errorText;
+    }
     return CardWrapper(
+      color: Theme.of(context).errorColor,
       child: Padding(
         padding: EdgeInsets.fromLTRB(Sizes.leftWidgetPadding, Sizes.rowPadding, Sizes.rightWidgetPadding, Sizes.rowPadding),
         child: Column(
@@ -15,21 +24,25 @@ class ErrorCard extends StatelessWidget {
           crossAxisAlignment: CrossAxisAlignment.center,
           children: <Widget>[
             Text(
-              'There was an error rendering card: ${card.type}. Please copy card config to clipboard and report this issue. Thanks!',
+              error,
               textAlign: TextAlign.center,
             ),
+            card != null ?
             RaisedButton(
               onPressed: () {
                 Clipboard.setData(new ClipboardData(text: card.cardConfig));
               },
               child: Text('Copy card config'),
-            ),
+            ) :
+            Container(width: 0, height: 0),
+            showReportButton ?
             RaisedButton(
               onPressed: () {
                 Launcher.launchURLInBrowser("https://github.com/estevez-dev/ha_client/issues/new?assignees=&labels=&template=bug_report.md&title=");
               },
               child: Text('Report issue'),
-            )
+            ) :
+            Container(width: 0, height: 0)
           ],
         ),
       )