Merge pull request #110 from thedax/master

Native: Remove hard-coded accept and escape keys.
Revert "Merge pull request #110 from thedax/master"

This reverts commit d2bdffcc54baa6ce1c42534cc4be952c2b76422f, reversing
changes made to 8f0d82ffb72efb7fe138e7d1c83635691ba3f4e7.
Focus on the slider when the popup opens
Stop inertia-scrolling when switching away from a tab.
Fix some gesture detection for scrolling
Enable dithering in the UI (helpful for the new soft gradient)
PgUp/PgDn/Home/End in scrollviews
Fix bug found by clang warning
Forgot to add margin to float slider
Remove annoying logging
Remove 'HIGH_MEM' define.
Allow right mouse button to act as a cancel button.