add an a2 template

...assets/template/make_a_wish_tour_social_a2/background.png

frontend/src/templates.js

...full_force_tour_social_A2/BackInFullForceTourSocialA2.vue

...end/src/views/back_in_full_force_tour_social_A2/canvas.js

...iews/make_a_wish_tour_social_A2/MakeAWishTourSocialA2.vue

frontend/src/views/make_a_wish_tour_social_A2/canvas.js