Added a second EQ Effect per deck, alias to filter controlls
readded filter controll to the control picker menu
Added second ComboBox for Filter knob effects
Added Alias controlls to development tools
Load filter effect from dlgprefeq
Merge remote-tracking branch 'upstream/master' into flter_rack

Conflicts:
	src/effects/effectmanifest.h
	src/effects/native/bessel4lvmixeqeffect.cpp
	src/effects/native/bessel8lvmixeqeffect.cpp
	src/effects/native/bitcrushereffect.cpp
	src/effects/native/filtereffect.cpp
	src/engine/effects/engineeffectchain.cpp
Allow to select "None" as filter effect
Merge branch 'eq_rack2' into filter_effect

Conflicts:
	src/dlgprefeq.cpp
	src/dlgprefeq.h
	src/effects/effectmanifest.h
	src/effects/effectsmanager.cpp
	src/effects/effectsmanager.h
remove gcc warning in BaseTrackPlayer
Shade: some minor clean ups
Put different headings onto the combo boxes for EQ and filter
Merge branch 'eq_rack2' into filter_effect

Conflicts:
	src/dlgprefeq.cpp
	src/dlgprefeq.h
	src/effects/effectsmanager.cpp
	src/effects/effectsmanager.h
renamed filter function
remove getAvailableFilterEffectNames() in favour of getEffectNamesFiltered()
Merge remote-tracking branch 'upstream/master' into filter_effect

Conflicts:
	src/effects/native/bitcrushereffect.cpp
Removed unused member variables from effectparameterslotbase.
pass m_group to effectparameterslots
pass effectUnitGroup to EffectSlot
removed unused m_rackNumber
set the group outside of EffectChainSlot