Fixed Bugs

#4121 Report Engine: System:ArgumentExeption - summary information can't calculated by not Integer/Decimal fields
#4132 Report Engine: Impediment does not exist in Report Engine model
#4144 Report Engine: Making reports private doesn't work
#4065 Report Engine: invalid ValueExpression at 1:8
#4104 Report Engine: Add Bug-Build relation into Report Engine
#3996 Report Engine: Report query builder incorectly handles many-to-many relationships
#4009 Release Start/End dates validation: release with invalid dates is added
#3976 Filter Popup: Invalid filter position after load
#4149 Links: Edit Link in Program lists should be point to project areas (not in program area)
#4134 NullReferenceException when Finish Iteration
#4109 Incorrect time remaining in Progress report when add time via Commit