pdf: add note number for single issue's PDF (#9720)
Contributed by Akiko T.
Removed ARCondition.
Use scopes instead of ARCondition.
Use Query.visible scope.
Removed unnecessary calculations in time entries index.
Adds named scopes for time entries index.
Merged r8002 from trunk
Bulgarian translation updated by Ivan Cenov.
Adds named scopes for projects index.
Adds named scopes for users index.
