Feature/keyboard enhancements

[Jack-Byrne]

Fixes #181

Testing Plan

• I have verified that I have not introduced new warnings in this PR (or explain why below)
• I have tested this PR against Core and verified behavior (if applicable, if not applicable, explain why below).

Core Tests

• Perform interaction keyboard with all layouts (numeric is new layout)
• Test behavior of masking global property
• Test behavior of setting custom keys on different layouts

Core version / branch / commit hash / module tested against: Keyboard enhancements branch / 4e7603e604ec578c2aa5fa41784dce6ea5c60fb9
Proxy+Test App name / version / branch / commit hash / module tested against: Test suite master

Summary

Adds support for a new layout: NUMERIC
Adds ability to mask the users input
Adds ability for mobile to set custom keys in place of special characters on the top level of the keyboard layout.

CLA

• I have signed the CLA

[jacobkeeler]

Also, it looks like keyboard property changes do not take effect while the keyboard is active unless a button is pressed, which can be a bit jarring. I think that ideally the keyboard should update immediately if the keyboard properties are set while it is active.

[Jack-Byrne]

For anyone wondering, we decided that a SetGlobalProperties should not change the keyboard layout while in view.