Use rgba for invalid tab colour, added hover state to invalid tabs
Use rgba for invalid tab colour, added hover state to invalid tabs

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