Implement the "OR" operator in queries
For some our projects we need to compute queries with a sequence of OR and AND conditions
for example: (Priority is High) OR (Priority is Normal AND Creation Date is older then a year)
but Redmine does not allow the combination of queries ie "OR".
It looks like it is implemented in "Trac": http://trac.edgewall.org/query, see the "OR" at the bottom right of the filters box