doc: tidy and cleanup CSS deps, add tutorial PDF generation

Author: adrientetar

.gitignore

@@ -77,7 +77,7 @@ src/.DS_Store
 /nd/
 /llvm/
 version.md
-rust.tex
+*.tex
 keywords.md
 x86_64-apple-darwin/
 x86_64-unknown-linux-gnu/

doc/lib.css

@@ -0,0 +1,7 @@
+<style>
+  /* Display the full TOC */
+  #TOC ul ul {
+    display: block;
+    padding-left: 2em;
+  }
+</style>