Use PageTransition component on every route

- Scrolls back to top when mounting new page with a timeout of the delay
- Rename photo Viewer class
- Change Shop posters section text from p to label

src/style/pages/shop/_posters.scss

@@ -108,7 +108,8 @@
             text-align: left;
         }
 
-        p {
+        &__text {
+            display: block;
             font-size: rem(18px);
             color: $color-cream;
             font-weight: 300;