quick preset editor must force values to be set on creation

[stolpeo]

Currently the quick preset editor allows values to be null for the individual settings (inheritance, frequency, effect, etc). When a quick preset is selected in the filter form that does not set all values, the "empty" values are just ignored and the current setting is kept. This can lead to confusing and inconsistent results.

A viable solution is to enforce the values in the quick preset to be set:

1. a new quick preset is created without any values. this means it must be allowed to have no settings
2. do not show incomplete quick presets in the filter form
3. show a warning in the filter form that a quick preset is not active unless all values are filled.