more flexible prerequisite management

* Move external <link>s and <script>s into separate includes.
* Opt for minified versions of external CSS stylesheets and JavaScript
files by default, allowing to use the properly formatted versions during
development using _config_dev.yml.
* External components versions are now in the config file.

1 files changed, 11 insertions, 0 deletions

diff --git a/_includes/ie_compat.html b/_includes/ie_compat.html
new file mode 100644
index 0000000..3cef67d
--- /dev/null
+++ b/_includes/ie_compat.html
@@ -0,0 +1,11 @@
+{% if site.minified_externals %}
+  <!--[if lt IE 9]>
+    <script src="https://oss.maxcdn.com/html5shiv/{{ site.html5shiv_version }}/html5shiv.min.js"></script>
+    <script src="https://oss.maxcdn.com/respond/{{ site.respond_version }}/respond.min.js"></script>
+  <![endif]-->
+{% else %}
+  <!--[if lt IE 9]>
+    <script src="https://oss.maxcdn.com/html5shiv/{{ site.html5shiv_version }}/html5shiv.js"></script>
+    <script src="https://oss.maxcdn.com/respond/{{ site.respond_version }}/respond.js"></script>
+  <![endif]-->
+{% endif %}