error icon for main-toolbar
change style
do not override window.onerror handler
add comments
add debug menu item
move to DebugCommands
add space
move error icon to the left of other status bar indicators
blink the number when error count is increased
pointer cursor on hover
clear counter with console.clear
correct if formatting
add a tooltip
added background fade like ins/ovr
fixed according to comments
Merge pull request #7639 from adobe/zaggino/error-icon

console error indicator for status bar