* Recon: disabling config while recording
* Capture and Spectre Painter: using freqman set bandwidth option instead of static define
* Recon: light_grey for disable so we can still see the text
* add a little Stash utility.
* add radio state RAII helper.
* first part of radio_state changes
* add radio_state_ to rest of apps
* fix freq_step and format
* fix unused ui_sigfrx: corrected sample rate, added back freq setting
