fixes bug 963671 - Changing date range on report list forgets which tab you were on
Merge pull request #1822 from peterbe/bug-963671-changing-date-range-on-report-list-forgets-which-tab-you-were-on

fixes bug 963671 - Changing date range on report list remembers tab
Merge pull request #1827 from rhelmer/bug952233-expand-topcrasher_ranks_bybug-by-default

bug 952233 - expand topcrasher_ranks_bybug results by default
fixes bug 952233 - display message if signature not in active releases