[LMP FA] Pass the ID to the configurator.
[LMP FA] Sync gain box and gain slider.
[LMP FA] EqBandWidget::{Get,Set}Gain().
[LMP FA] IEqualizer.
[LMP FA] EqConfigurator just takes IEqualizer now.
[LMP FA] Eq10BandEffect::SetGains().
[LMP FA] Added EqConfiguratorDialog.
[LMP FA] Configurable gains.