[svn r37812] Using style.css from the doc directory for apigen now, with some overrides in

a seperate stylesheet. Cleaned up the stylesheet and script handling a bit:
stylesheets and scripts are now defined in the LayoutPage class (where they're
easily customizable). Also removed some old unused code and moved the H class
(html related) stuff to its own file. The idea is that this will become the
place where all the layout is defined.

--HG--
branch : trunk

py/apigen/testing/test_apigen_example.py

@@ -204,6 +204,7 @@ class TestApiPageBuilder(AbstractBuilderTest):
         print html
         run_string_sequence_test(html, [
             'href="../style.css"',
+            'href="../apigen_style.css"',
             'src="../api.js"',
             'href="index.html">pkg',
             'href="main.html">main',