Send machine Preferences to Secondary as part of transfer or setup

[mmehr2]

This is not really part of Issue #1 or Issue #22. It is about sending the contents of the Remote Installations sub-dialog (Settings, also under Tools/Preferences) to the Secondary for use by the actual teleprompter. The most visible setting is the inverse video in Prompt mode, but others also make sense.

The job of this code will be to package up all the settings in a message string and send it off to the Secondary remote, where it will be parsed back into settings and saved using the same code as it would locally if the operator were in the same room.

[mmehr2]

Work tasks: The Remote Dialog settings need to be sent to the Remote machine.

• [x] Add code to send the contents of the Tools/Preferences (Remote Installations/Settings) dialog box to the remote machine.
• [x] -- Serialization code and unit test.
• [x] -- Network message send/receive code.
• [ ] Send in any case for now, but eventually detect changes since last time sent.
• [x] On receipt of this message, unpack the string and post the WMA_UPDATE_SETTINGS msg to app.
• [x] On receipt of WMA_UPDATE_SETTINGS, frame will unpack the string contents into a dialog data object and call the SaveSettings()