fixed: events get start/end time even when none specified (also can offset start/end day

docs/changelog/7.x.x.txt

@@ -1,4 +1,5 @@
 7.5.6
+ - fixed: events get start/end time even when none specified (also can offset start/end day)
  - fixed: event related links may not work with some group names
  - Use UTF8 for database connection when connecting to MySQL
  - Internationalized Calendar templates

lib/WebGUI/Asset/Event.pm

@@ -1477,8 +1477,8 @@ sub processPropertiesFromFormPost {
     # All day events have no time
     if ($form->param("allday")) {
         $self->update({
-            startTime   => undef,
-            endTime     => undef,
+            startTime   => '',
+            endTime     => '',
         });
     }
     # Non-allday events need timezone conversion