Fixed that the project jump box does not preserve current tab after r2304.
Ignore archived subprojects in Project#rolled_up_trackers (#2550).
Merged r2246 and r2248 from trunk (#2456).
Merged r2265 from trunk (#2523).
Merged r2266 from trunk (#2522).
Merged r2280 from trunk (#2506).
Merged r2302 from trunk (#2466).
Removes unused projects_count column from projects table.
Merged nested projects branch. Removes limit on subproject nesting (#594).
Fixes a test that was broken by r2294.
