Update the structure of the home page

- Improve phrasing of certain paragraphs
- Break up into subsections
- Hide the table of content at the bottom of it to reduce visual noise
- Correctly reference that translated docs apply to the stable branch, not the latest branch
- Fix styling of breadcrumbs

_templates/breadcrumbs.html

@@ -9,6 +9,7 @@
 		font-size: 14px;
 		float: right;
 		clear: both;
+		padding-top: 4px;
 	}
 
 	@media screen and (max-width: 480px) {