Debugged the SSO process.

	modified:   cgi-bin/MyHTMLResultWriter.pm
- added strand information to the form
- changed form method to post and added parameter o=C to work with
nph-blast

	modified:   cgi-bin/nph-blast.pl
- debugged the way SSO works through sessions.
  - All CGI parameters are stored as session parameters, because they do not survive sso-post-redirect.
  - changed all calls to CGI params to the OO-call ($q-param), necessary due to the above. Removed
  import of functional interface to CGI parameters
  - SSO is now done each time the script is invoked
  - Session will no longer be deleted after result is displayed
  - instead url parameter o=C is added to provide a fresh session, on expire, expired sessions are discarded
  - fixed the way the javascript interacts with the script. Reloading the form is avoided, instead
    controll is through URL parameters only
  - after the update of feature_loc is completed or canceled, session parameters for controlling the update need to
be cleared, or the controll flow gets stuck in a loop.
  - after update or cancel of feature_loc the script returns to the result screen

- Refactured the logic for writing the feature location to DB into its own function