Display tooltip for status

Display tooltip for 'READY', 'ERROR!' and 'COMPLETED' states in
the status pane. Additionally, refactor the
updateRemarkAndAdvice function into clearAdvice and
displayAdvice functions and call displayAdvice function only
when the status is 'COMPLETED'.

Set Version.VERSION = '1.0-beta2.2'.
Fix: Focus is not set on input box on page load

When the tutor is loaded or reloaded, the focus is not set on
the input textarea element. This is due to a bug in the code
that initializes the tutor. The focus is set on the input
textarea element before the practice panel wrapper containing
the textarea element is displayed. Fix this bug by setting the
input textarea element after the practice panel wrapper is
displayed.