UI: enforce  header Grid
UI: enforce  header Grid

fixes #132

Maroben/MoblerCards,Maroben/MoblerCards,phish108/MoblerCards,Maroben/MoblerCards,phish108/MoblerCards,phish108/MoblerCards,Maroben/MoblerCards,phish108/MoblerCards,phish108/MoblerCards,Maroben/MoblerCards