Fixes for the analysis reset() method.
It has been renamed to post_reset() and now removes all the GUI elements itself. The call to delete_all() is of no use because it calls delete_analysis() which removes data pipes and ds.relax_gui data storage as well, and then notifies observers.
Authored by: bugman 2011-07-21
Parent: [r13812]
Child: [r13814]
