Merged r2713 from trunk. #3086
Link projects and users in the issue list.
#3086
Link the project name in simple issue lists.
#3085
Adds group folding on issue list (#2679).
Disable email notifications before importing data.
Merged r2707 and r2708 from trunk.
Fixes r2707.
Fixes Mantis importer broken by 2670.
Merged r2705 from trunk (#3291).
Fixed Trac importer broken by r2670 (#3254).
