Merge pull request #1431 from diizy/master

Fader: add a way to disable the x100 display conversion so the fader wid...
updated Fader to use setHintText
enables setting of the display text.
Merge pull request #1434 from curlymorphic/fader

updated Fader to use setHintText
Merge pull request #1439 from diizy/master

Bitcrush: small improvement, also add some stuff to math & constants
Update FxMixer.cpp

prevent double adding of jobs
Merge pull request #1440 from LMMS/stable-1.1

Update FxMixer.cpp
More fixes (Bitcrush, Linkwitz-Riley filter)