Add force template

...d/src/assets/previews/back_in_full_force_photo_banner.png

.../assets/template/back_in_full_force_banner/background.png

...emplate/back_in_full_force_banner/background_inverted.ong

...emplate/back_in_full_force_banner/background_inverted.png

frontend/src/templates.js

...views/back_in_full_force_banner/BackInFullForceBanner.vue

frontend/src/views/back_in_full_force_banner/canvas.js