Make it possible for certain targets to enter values directly

[Benjamin Klum]

... not in percentages.

Possible targets:

• Track volume, track send volume (enter dB)
• Track pan, track send pan (enter pan string)
• Master tempo (bpm)

[Benjamin Klum]

re #103 Make it possible to enter bpm directly for tempo target

→ <<cset c670bb878528>>

[Benjamin Klum]

re #103 Make it possible to enter dB directly for volume targets

→ <<cset 2f0092d7a7ac>>

[Benjamin Klum]

re #103 Make it possible to enter expression directly for pan targets

→ <<cset 00d6f5070dd0>>

[Benjamin Klum]

re #103 Use direct values also for step size text fields

→ <<cset 3d55f6e77145>>