Only attempt to enable extensions if an extension.driver file exists. RE: #1237
Only attempt to enable extensions if an extension.driver file exists. RE: #1237

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