Quality Control before releasing our first beta

[borzel]

Check, if these things work in general (on all models):

General

• Save and Load "Scene"
• LED Brightness
• Display Brightness
• LCD Contrast
• Lamp On/Off/PWM (Nice to Have)

Routing

• XLR Inputs
• AUX Inputs
• Talkback Inputs
• XLR Outputs
• AUX Outputs
• Monitor / Headphone

Channels

• Phanton Power
• Gain
• Volume | not working on FX Return Mixer Channels
• Mute | not working on FX Return Mixer Channels
• Solo | generally not working
• change Channel Color
• Sends to Mixbusses
• "Sends" to LR and Sub