Add new icon for Preferences > Key Detection which replaces the current temp. icon. Add icon as vector to the icon template. Add a vertical spacer to dlgprefkeydlg.ui that prevents QGroupBoxes in there to grow infinitely.
Update the new key detection icon to use the standard gradient used elsewhere in the preferences
Merge pull request #20 from esbrandt/features_key_icon

Add new icon for Preferences > Key Detection