* Modify uiBug type. Rename BisectCause to BisectCauseDone. Introduce
BisectFixDone.
* Modify createUIBug() and MergeUIBug() to set the above fields
appropriately.
* Modify bug_list to display the bisection status; remove yesSort() as
it is not used anymore. Adjust ".list_table .stat" to appropriate width.
* Add TestBugBisectionStatus() to check bisection status on main page.
* Add file from running "make generate": pkg/html/generated.go