Make the Sunrise/Sunset control configurable.

[tfabris]

This script was originally written to control a camera that was set up to watch diurnal animals. The feature which turns the camera on at sunrise and off at sunset, was hard-coded.

But as a user, I might want to be able to get the other benefits of this script, even when I intend to leave the video stream running 24/7.

To do:

Add a configuration option which will allow the script to disable the features which do the following:

• Turn on the camera at sunrise.
• Turn off the camera at sunset.
• Split the video stream with a long bounce, at the midpoint of the broadcast day, to shorten the video segments.

Make sure that disabling those features still allows the following features to continue working normally:

• Split the video stream with a long bounce, if the length of a given video segment exceeds a certain configured amount.
• Briefly bounce the stream if the internet connection has been interrupted.
• Briefly bounce the stream if the stream becomes unhealthy.
• Briefly bounce the stream hourly to keep the audio/video synchronization healthy.

User notes:

• Users who use this feature will need to activate their YouTube stream manually from the Surveillance Station controls, the script will no longer attempt to start the YouTube stream for them at any given time of day. All it will do is bounce the stream to fix certain health problems if they occur. But if the stream isn't already turned on by the user, it will do none of those things.
• Users may see the script perform a split (a long bounce to split the stream into separate video segments on YouTube) at a couple of odd times. Reason: The script keeps track of when it has started the camera by writing a timestamp to a file. This only occurs during splits (long bounces) and during sunrise/sunset controls. With the sunrise/sunset controls disabled, that leaves only the splits to write that timestamp to the file, and the script has no idea when the user started their stream by hand. So the first time you run the script after starting the stream, it might perform a split as it re-establishes its starttime. It also might perform a split at a certain timepoint after midnight, for similar reasons.

[tfabris]

This is now implemented in the latest code commit. The sunrise/sunset controls can now be disabled by setting sunriseSunsetControl=false in the crowcam-config file.

@deltasierra - Make sure to read the "User Notes" above.