Resolves #83 Calendar support

lib/entity_class/entity.class.dart

@@ -79,7 +79,6 @@ class Entity {
   int statelessType = 0;
 
   List<Entity> childEntities = [];
-  List<String> attributesToShow = ["all"];
   String deviceClass;
   EntityHistoryConfig historyConfig = EntityHistoryConfig(
     chartType: EntityHistoryWidgetType.simple

lib/entity_widgets/common/entity_attributes_list.dart

@@ -7,20 +7,9 @@ class EntityAttributesList extends StatelessWidget {
   Widget build(BuildContext context) {
     final entityModel = EntityModel.of(context);
     List<Widget> attrs = [];
-    if ((entityModel.entityWrapper.entity.attributesToShow == null) ||
-        (entityModel.entityWrapper.entity.attributesToShow.contains("all"))) {
     entityModel.entityWrapper.entity.attributes.forEach((name, value) {
-        attrs.add(_buildSingleAttribute("$name", "$value"));
+      attrs.add(_buildSingleAttribute("$name", "${value ?? '-'}"));
     });
-    } else {
-      entityModel.entityWrapper.entity.attributesToShow.forEach((String attr) {
-        String attrValue = entityModel.entityWrapper.entity.getAttribute("$attr");
-        if (attrValue != null) {
-          attrs.add(
-              _buildSingleAttribute("$attr", "$attrValue"));
-        }
-      });
-    }
     return Padding(
       padding: EdgeInsets.only(bottom: Sizes.rowPadding),
       child: Column(
@@ -49,7 +38,7 @@ class EntityAttributesList extends StatelessWidget {
             padding: EdgeInsets.fromLTRB(
                 0.0, Sizes.rowPadding, Sizes.rightWidgetPadding, 0.0),
             child: Text(
-              "$value",
+              "${value}",
               textAlign: TextAlign.right,
             ),
           ),

lib/entity_widgets/entity_icon.dart

@@ -36,12 +36,12 @@ class EntityIcon extends StatelessWidget {
             image: DecorationImage(
               fit:BoxFit.cover,
               image: CachedNetworkImageProvider(
-                "${data.entity.entityPicture}",
+                "${data.entity.entityPicture}"
               ),
             )
         ),
       );
-    } else {
+    }
     String iconName = data.icon;
     int iconCode = 0;
     if (iconName.length > 0) {
@@ -59,7 +59,6 @@ class EntityIcon extends StatelessWidget {
         )
     );
   }
-  }
 
   @override
   Widget build(BuildContext context) {

lib/mdi.class.dart

@@ -23,6 +23,8 @@ class MaterialDesignIcons {
     "cover.closing": "mdi:window-open",
     "cover.opening": "mdi:window-open",
     "camera": "mdi:cctv",
+    "calendar": "mdi:calendar",
+    "timer": "mdi:timer",
     "lock.locked": "mdi:lock",
     "lock.unlocked": "mdi:lock-open",
     "fan": "mdi:fan",