* Add nightly build features
Add nightly build features for SNR sound control and Basic Setup
screens.
* Add explanation for pitch/volume sliders
* Clarify wording on when LAN AP display appears
Clarify the wording about when the LAN AP display section will appear in
the UI.
* Fix snr-sound image
Fix the snr-sound image.
* Add Other Possible Services section
Add the Other Possible Services section to the doc set.
* Correct typo in image name
* Update screenshots to 3.19.3.0
Update screenshots to 3.19.3.0 version and change text to 3.19.3.0
pre-release
* Update etherpad screenshot
Steve Lewis KC0EUW