Added delete functionality for events. Additionally, made improvements and fixed to the validation for event creation.

static/css/main.css

@@ -137,13 +137,17 @@ div.formset_object {
   background-image: linear-gradient(to bottom, rgb(242, 222, 222) 0, rgb(242, 203, 208) 100%);
 }
 
-/* Error */
+/* Error / Success */
 .errorText {
   margin-top: 0.5em;
   font-weight: bold;
   color: red;
 }
 
+.successText {
+  color: green;
+}
+
 /* File uploading */
 input[type="file"] {
     display: none;