2.0.17 beta

Features

• Export all variable maps to CSS variables. Check the README.md for a full list.
• Revise font-sizes, make them the same for both platforms

Fixes

• Fix the modal ActionBar with ns-statusbar-transparent
• Fix the aqua skin colors
• Revamp the Button animations to work in ActionBar
• Return accent var in maps
• Remove the ghost StackLayout padding in RadListView