Fix for GPII-89 and GPII-72 issues

Hi!

Note that this branch includes the changes included in this pull-request (updating ORCA's solution entry) [1]  and should be used within the code included in this pull-request (ORCA settings handler) [2] 

I've created a N&P set (orca1.json) for testing purposes.
Additionally, this pulll-request adds support for the "MagnifierPosition" common term

Best regards!

[1]: https://github.com/GPII/universal/pull/73
[2]: https://github.com/GPII/linux/pull/16