Windows High Contrast Improvements

 

Spent a little time this week to explore our Windows accessibility High Contrast support because I was working on a GTK High Contrast issue by coincidence when xisco mentioned the Windows one in the regular ESC.

Left is the sad original case of unreadable menubar and missing sidebar icons. Right is the newly fixed case with legible menubar and restored sidebar icons. Additionally the "default" buttons of dialogs ("insert" in this case) are now using the correct text color, preview is visible, and EditBoxes render with the correct border color for focus and mouse over. Normal themes also gain a more subtle border color in Edits to indicate focus.