GUI - Many improvements from the user perspective

[beniroquai]

• [x] Spped on Flow in automatic mode from GUI side?
• [x] STOP button from Motor doesn't work?
• [ ] STream restart when changing tabs
• [ ] exposure/gain vs. automatic setting switch
• [x] enable input without keyboard (onscreen keyboard?)
• [x] Snap button
• [x] Start/Stop recording button
• [x] Move always on button
• [ ]

[beniroquai]

The Speed etc. will be settable using this.

Fine? @christiankuttke ?

[christiankuttke]

Maybe SI suffixes for improved readability? 1 K 10 K 100 K 1 M 10 M