This commit implements the status change pop up for a question
in the base view. This feature update will allow the change of
status of a question without creating a new version.
This commit also implements the status as a char rather than
an int value.
This implementation will introduce a qbank plugin "editquestion"
which will implement the edit question, add question and copy
question actions in the question bank view by replacing the
core classes. Having this plugin will give users the
flexibility of enabling or disabling these actions.
Jun Pataleta