[Windows] Mitigation for #1285. Adds a mitigation for issues with installation under certain languages in Windows 10 1803 and later

[Windows] Patch serialization code for MSTSC and Hyper-V client

[Web] Toolbar UI language duplication fix

[iOS] Updates default keyboard to "EuroLatin (SIL)"

[Windows] Fixes #1285. Adds a mitigation for issues with installation under certain languages in Windows 10 1803 and later

[Android] Update Tests

* Fix KeyboardHarness to compile
* Add keycode app for debugging `keyCode` and `scanCode` output from physical keyboards (app doesn't use KMEA)

Keyboardprocessor api

[Windows] Metro/UWP support for Keyman

While dynamic linking works on linux & Mac OS due to rpath support 
Windows can't find the dll when debugging the test case unless it's 
copied into the tests builddir or it has it's working dir set to the 
DLL's builddir.

Also prevent compiler complaining about inconistent dllimport/dllexport 
linkage by ensuring KM_KBP_EXPORTING is defined on Windows too.

[Developer] Use npm to update Monaco and keep it out of source tree