use Model level cache directly

git-svn-id: https://svn.code.sf.net/p/moneymanagerex/code/trunk@6357 7f5d68d0-c712-0410-839f-9b116a576cc5
de coupe

git-svn-id: https://svn.code.sf.net/p/moneymanagerex/code/trunk@6358 7f5d68d0-c712-0410-839f-9b116a576cc5
pass const ref

git-svn-id: https://svn.code.sf.net/p/moneymanagerex/code/trunk@6359 7f5d68d0-c712-0410-839f-9b116a576cc5
re order code 

git-svn-id: https://svn.code.sf.net/p/moneymanagerex/code/trunk@6360 7f5d68d0-c712-0410-839f-9b116a576cc5