[FIX]tracker: do not recalculate the computed field as value already saved in the database and not all the fields used by the computed fields are fetch (optimisation 21692)
[FIX]tracker: do not recalculate the computed field as value already saved in the database and not all the fields used by the computed fields are fetch (optimisation 21692)

git-svn-id: 722c0fef737e30edb7d5e851b50e1eda1e207b8c@26812 b456876b-0849-0410-b77d-98878d47e9d5

changi67/tiki,changi67/tiki,changi67/tiki,changi67/tiki,tikiorg/tiki,tikiorg/tiki,oregional/tiki,oregional/tiki,changi67/tiki,tikiorg/tiki,tikiorg/tiki,oregional/tiki,oregional/tiki