Added qTip library
utils.js now processes XML response from server. So far only <comment> and <enablePrompt> tags are processed
Added check in the CheckAnswers if the submitting prompt needs to be reenabled. No counting of answer tries is implemented yet.
TODO add a field(or attribute) to the XML format to report number of tries left to the user.
PromptToPull class acquired a new field: regenerate. It indicates if the problem needs to be regenerated or just pulled from the ProblemPusher