1. Added a button to turn template profiling on/off.
2. Moved templating information to the request information page. It was confusing having it work differently than db and other information. If, for instance, you clicked on a request link in the developer support index page, you'd get the db timing information for that request, but the profiling stuff would come from the footer - and would be the profile information for displaying request-info.tcl/adp, not for the template served for that request. Oops.
3. Simplified the ds_profile proc since in practice it only is used for profiling templates.