Added DataSourcePreExecute delegate
Added DataSourcePreExecute delegate

allen/auth.getsymphony.com,alexnantel88/symphony-2,twiro/symphony-2,johnpuddephatt/symphony-2,bauhouse/Piano-Sonata,jonmifsud/symphony-2,jdsimcoe/symphony-boilerplate,wastemobile/Symphony2.3.6,symphonycms/sym-getsymphony,ljonka/symphony-2,roshinebagha/Symphony-Test,jensscherbl/symphony,allen/auth.getsymphony.com,mazedigital/jcilearn,NikoMostWanted/symphony-2,DavidForster/symphony-2,symphonycms/sym-getsymphony,thebestsophist/personal-health-diary,alexnantel88/symphony-2,jdsimcoe/symphony-boilerplate,symphonycms/symphony-2,ayellowraven/projectplaten,bauhouse/sym-pears,DavidForster/symphony-2,jdsimcoe/symphony-boilerplate,johnpuddephatt/symphony-2,michael-e/symphony-2,DeuxHuitHuit/symphony-2,mazedigital/jcilearn,michael-e/symphony-2,blaXXabla/projet_test_symphony,DeuxHuitHuit/symphony-2,ayellowraven/projectplaten,avanteweb/symphony-2,NikoMostWanted/symphony-2,twiro/symphony-2,bauhouse/sym-pears,bauhouse/sym-todo-list,bauhouse/sym-todo-list,bauhouse/Piano-Sonata,BloodBrother/symphony-2,jdsimcoe/symphony-boilerplate,BloodBrother/symphony-2,rzantolas/Symphony-Test,jurajkapsz/symphony-2,astudio/remixhair,thebestsophist/personal-health-diary,brendo/symphony-2,jonmifsud/symphony-2,blaXXabla/projet_test_symphony,mazedigital/jcilearn,rzantolas/Symphony-Test,avanteweb/symphony-2,astudio/remixhair,symphonycms/symphony-2,jurajkapsz/symphony-2,ljonka/symphony-2,wastemobile/Symphony2.3.6,roshinebagha/Symphony-Test,jensscherbl/symphony,brendo/symphony-2