Work around spaces being added when copying to clipboard.

Since the license text is wrapped in `<pre>` with `white-space: pre-wrap` empty lines make the #license-text bigger than it actually is.

So, get rid of the empty newline at the end of the license text files since jekyll adds trailing spaces when it parses those.

_layouts/license.html

@@ -2,11 +2,7 @@
 
       <div class="clearfix">
         <div class="license-body">
-          <pre id="license-text">
-
-{{ content | replace:"<","[" | replace:">","]" }}
-
-          </pre> <!-- /license-text -->
+          <pre id="license-text">{{ content | replace:"<", "[" | replace:">", "]" }}</pre>
         </div> <!-- /license-body -->
 
 {% include sidebar.html %}