Fix regex to allow 0 or more spaces either side of the `+` operator in DS filters. This is more in keeping with the original code.
Fix regex to allow 0 or more spaces either side of the `+` operator in DS filters. This is more in keeping with the original code.

Corrected string to value

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