Add mpl decorators to the tests that need them
Add mpl decorators to the tests that need them

larrybradley/astropy,stargaser/astropy,larrybradley/astropy,StuartLittlefair/astropy,astropy/astropy,larrybradley/astropy,pllim/astropy,MSeifert04/astropy,StuartLittlefair/astropy,pllim/astropy,dhomeier/astropy,dhomeier/astropy,mhvk/astropy,astropy/astropy,astropy/astropy,MSeifert04/astropy,stargaser/astropy,dhomeier/astropy,larrybradley/astropy,stargaser/astropy,aleksandr-bakanov/astropy,saimn/astropy,saimn/astropy,lpsinger/astropy,dhomeier/astropy,StuartLittlefair/astropy,MSeifert04/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,mhvk/astropy,pllim/astropy,stargaser/astropy,mhvk/astropy,mhvk/astropy,pllim/astropy,pllim/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,astropy/astropy,aleksandr-bakanov/astropy,mhvk/astropy,MSeifert04/astropy,saimn/astropy,StuartLittlefair/astropy,astropy/astropy,saimn/astropy,larrybradley/astropy,lpsinger/astropy,lpsinger/astropy,saimn/astropy