fixed an issue where associations drawer throws fatal error when associated section has no visible or sortable fields in entries table
fixed an issue where associations drawer throws fatal error when associated section has no visible or sortable fields in entries table

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