Pre-publication pass

Adding entry about transcripts
Adding entry about background picture
Adding many missing screenshots

content/tutorials/more-features/adding-background-image/index.md

@@ -0,0 +1,44 @@
++++
+title = 'Adding a background image'
+show_toc = false
+weight = 5
++++
+
+Adding a background image for your website is *very* easy.
+
+Inside your website folder, there is an `assets/` folder.
+
+Simply create a `background/` folder inside that and put
+in there any JPG, PNG or WEBP you want!
+
+Note that if you put multiple pictures in there,
+Silicate will take the first one it finds.
+
+For example, if you downloaded the resource archive
+from the [Getting started tutorials]({{% relRef "tutorials/getting-started/new-comic-and-pages/" %}}),
+there is a background image in `background/`: `bg_ep7.jpg`.
+
+Just put the picture inside `assets/background/`.
+
+Your files should now be like this:
+
+```
+my_webcomic/
+    hugo.toml
+    assets/
+        background/
+            bg_ep7.jpg
+    content/
+        about.md
+        comic/
+            _index.md
+            E01P01/
+                index.md
+                transcript.md
+                strips/
+                    E01P01.jpg
+```
+
+And now, the website should look a lot better!:
+
+![Website with background](website_background.jpg)