Various anime improvements

Series type is persisted in the client
New: Warning in UI if anime episode doesn't have an absolute episode number
New: If series type is changed the series will be rescanned
New: Update scene mappings when series is refreshed

src/UI/Shared/Grid/HeaderCell.js

@@ -35,6 +35,10 @@ define(
                 //Do we need this?
                 this.$el.addClass(column.get('name'));
 
+                if (column.has('className')) {
+                    this.$el.addClass(column.get('className'));
+                }
+
                 this.delegateEvents();
                 this.direction(column.get('direction'));