Override prettyPrint's colour choice (red) for strings in quotes.

I've moved the docs.css to last so it can tweak any existing css, and
then set that to the same grey colour used for 'normal' text.

While testing I found and fixed an over-zealous line wrap.

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)

docs/theme/mkdocs/base.html

@@ -16,9 +16,9 @@
   {% if canonical_url %}<link rel="canonical" href="{{ canonical_url }}">{% endif %}
   <link href="/css/bootstrap-custom.css" rel="stylesheet">
   <link href="/css/main.css" rel="stylesheet">
-  <link href="/css/docs.css" rel="stylesheet">
   <link href="/css/prettify-1.0.css" rel="stylesheet">
   <link href="/tipuesearch/tipuesearch.css" rel="stylesheet">
+  <link href="/css/docs.css" rel="stylesheet">
   <link rel="shortcut icon" href="{{ site_favicon }}">
   <title>{% if page_title != '**HIDDEN** - '+site_name %}{{ page_title }}{% else %}{{ site_name }}{% endif %}</title>
   <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->

docs/theme/mkdocs/css/docs.css

@@ -335,3 +335,7 @@ table.table tr td img {
 #versionnav ul ul {
     padding: 0;
 }
+
+/* over-ride the prettyPrint colouring */
+
+.str, .atv { color: #48484C; }