Disabled update-page-padding in tab bar, otherwise the padding is refreshed each time the page redraws. This does not work when the tab bar may be hidden. Changed the calendar to allow for refresh when the page is not visible.
Added event handling to hide/show the tab bar when the keyboard is shown/hidden.
Fixed editor issue where a hidden editor that is not initialized will attempt to save its contents on keyboard hide. Fixed tabbar appear/disappear when keyboard hides/shows.