[telemetry] change period of some messages

so they are not multiples of each others
the uart transmit buffer is slightly to small when using xbee_api and
svinfo is send with gps message
Added a flying-wing A/C Icon, and showed an exaple on microjet airframe
Corrected the typo which prevents the conventional A/C icon selection
[tools] stm32_mem.py: add option to only list devices

and make the dry run option an alias for list