* Optimize display for mixer setup
* Make mixer setup screen full icons
* - Display flighmode in SMLSIZE
- Add icon for it
- Space out things given then gain space
* Introduce SLOW_BLINK (half rate BLINK)
WARNING : code for both DS and single icon 'DS' is here, need cleaning before PR after choice is made
* Introduce snail and hourglass icons
Fine tuning
* Move to single icon column for DS (3 possibles icons)
Space things a little
* delayslow icon
* delayslow icon