fixed github link and moved jquery selectors ....

1.the link raw.github...spyreqs serves the file as plain text
and for that reason is not executable so i changed it to
rawgithub...spyreqs which serves the file with the correct mime-type
2.$app_Message and $app_Div vars are still global because they may be
used in some other functions but the assignment to jquery objects
happens in the initApp function because then the DOM is ready.It works
now but we should  find a more elegant solution to this issue.