listen for changes to adjusted content inset instead of keyboard appearance
listen for changes to adjusted content inset instead of keyboard appearance

for determining portion of webview covered by keyboard

wikimedia/apps-ios-wikipedia,josve05a/wikipedia-ios,wikimedia/apps-ios-wikipedia,josve05a/wikipedia-ios,josve05a/wikipedia-ios,montehurd/apps-ios-wikipedia,josve05a/wikipedia-ios,wikimedia/apps-ios-wikipedia,josve05a/wikipedia-ios,josve05a/wikipedia-ios,josve05a/wikipedia-ios,wikimedia/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,wikimedia/wikipedia-ios,montehurd/apps-ios-wikipedia,wikimedia/wikipedia-ios,wikimedia/wikipedia-ios,wikimedia/wikipedia-ios,montehurd/apps-ios-wikipedia,wikimedia/wikipedia-ios,wikimedia/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,wikimedia/wikipedia-ios,wikimedia/wikipedia-ios,josve05a/wikipedia-ios