Fix json spacing

Update editor config
Add configuration warning

.editorconfig

@@ -19,4 +19,4 @@ indent_size = 2
 
 [*.json]
 indent_style = space
-indent_size = 4
+indent_size = 2

package.json

@@ -80,6 +80,10 @@
       "comma-dangle": [
         "error",
         "always-multiline"
+      ],
+      "semi": [
+        "error",
+        "never"
       ]
     },
     "parserOptions": {

src/components/tasks/add-task.vue

@@ -27,6 +27,9 @@
 				Add
 			</x-button>
 		</p>
+		<p class="help is-warning" v-if="!validListIdAvailable">
+			No default list set. Please go to settings and specify default list.
+		</p>		
 	</div>
 </template>