Front: Add standalone shim front page when no theme is selected
Front: Add standalone shim front page when no theme is selected

Refs SHOOP-1088 / SHOOP-1283

taedori81/shoop,shoopio/shoop,taedori81/shoop,suutari/shoop,taedori81/shoop,akx/shoop,shoopio/shoop,hrayr-artunyan/shuup,lawzou/shoop,hrayr-artunyan/shuup,jorge-marques/shoop,suutari/shoop,akx/shoop,shawnadelic/shuup,suutari-ai/shoop,hrayr-artunyan/shuup,lawzou/shoop,jorge-marques/shoop,shawnadelic/shuup,shawnadelic/shuup,lawzou/shoop,jorge-marques/shoop,suutari/shoop,suutari-ai/shoop,suutari-ai/shoop,shoopio/shoop,akx/shoop