wifi and mqtt reliability

wifi keepalive improvement for reliability

MQTT processing flag

MQTT Improvements

simplified configuration to avoid conflicts
made MQTT info part of the secrets file by default
added MQTT refresh upon webpage broadcast
added Speed, Auto Play and removed QoS from MQTT status update.

[ImgBot] Optimize images

*Total -- 507.50kb -> 373.56kb (26.39%)

/software_screenshots/device_0.png -- 9.10kb -> 4.01kb (55.9%)
/software_screenshots/alexa_config.png -- 59.67kb -> 26.63kb (55.38%)
/software_screenshots/board_manager.png -- 25.52kb -> 14.09kb (44.76%)
/software_screenshots/arduinoJson.png -- 31.64kb -> 17.55kb (44.53%)
/software_screenshots/ota.png -- 30.75kb -> 17.61kb (42.72%)
/software_screenshots/mqtt.png -- 27.84kb -> 15.97kb (42.64%)
/software_screenshots/config.png -- 96.56kb -> 60.75kb (37.09%)
/web_ui.jpg -- 226.43kb -> 216.95kb (4.18%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

[ImgBot] Optimize images

Compile errors fix

Encasing webserver 2 functions in alexa if definition for code to compile

*Total -- 275.54kb -> 222.84kb (19.13%)

/data/images/surr.png -- 9.91kb -> 5.20kb (47.56%)
/data/images/atom196.png -- 5.34kb -> 3.80kb (28.89%)
/screenshot_alpha.jpg -- 260.29kb -> 213.85kb (17.84%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Adding mDNS ability to the webserver to avoid looking for the ip

Changing Index based selection on solid color pattern for name based …