Modify way results are passed back in askSage.  Work on error messages.
Set default for accepting TOS to false

Check headers and pass on warning message if the server doesn't return
200 OK
Also determine whether the WEBWORK variable is non-empty. If it is return the contents of stdout in a string.  Otherwise return a hash containing
webwork=>WEBWORKcontents, success=>1, stdout => stdoutcontents
Merge pull request #78 from mgage/release/2.8_asksageupdate

Modify way results are passed back in askSage.  Work on error messages.