This event allows a plugin to register custom filter objects (based on the MantisFilter class) that will allow the user to search for issues based on custom criteria or datasets. The plugin must ensure that the filter class has been defined before returning the class name for this event. <Array>: Array of class names for custom filters

This event allows a plugin to register custom column objects (based on the MantisColumn class) that will allow the user to view data for issues based on custom datasets. The plugin must ensure that the column class has been defined before returning the class name for this event. <Array>: Array of class names for custom columns