Fix handling of Static XML DS's. RE: #1618
Fix handling of Static XML DS's. RE: #1618

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