remove duplicate methods

commit 743f0f4fe19a656127a0dbaa4c46792c768216f1
Author: Danny Wahl <danny@iywahl.com>
Date:   Thu May 15 10:36:15 2014 +0800

    fix regression in navbar()

commit 9cf776cec1eeb85716f6cdc45548505442efc66a
Author: Danny Wahl <danny@iywahl.com>
Date:   Thu May 15 10:31:03 2014 +0800

    remove course_renderer.php

    no more methods :)

commit 5ac895be63f3bc6264dc4d9f6e30a9e5d05f673f
Author: Danny Wahl <danny@iywahl.com>
Date:   Thu May 15 10:30:41 2014 +0800

    move theme_elegance_get_nav_links() to lib.

    this was in course_renderer() but outside of the class...

commit 6bb7d14710720084c89eb1597e38f87f2617a467
Author: Danny Wahl <danny@iywahl.com>
Date:   Thu May 15 10:17:22 2014 +0800

    fix regression in custom_menu()

commit aa31a0792191e7e79f79ef4ac48bf37bd474e4da
Author: Danny Wahl <danny@iywahl.com>
Date:   Thu May 15 10:12:45 2014 +0800

    remove course_search_form method

commit 058d041ca885e68fa4931438d0c8e52a8eaa8bf0
Author: Danny Wahl <danny@iywahl.com>
Date:   Thu May 15 10:10:43 2014 +0800

    put back user_menu() method

    oops...

commit 4c051dd8c7a2f9385a48d759f8df7c8567271c6b
Author: Danny Wahl <danny@iywahl.com>
Date:   Thu May 15 10:08:23 2014 +0800

    delete coursecat_coursebox_content() method

    watch for regressions in $summary and $isimage

commit 4881b24aef4b9d82d629cade7c87e5e7480a8718
Author: Danny Wahl <danny@iywahl.com>
Date:   Thu May 15 10:07:00 2014 +0800

    delete coursecat_coursebox method

    watch for regressions in $summary

commit 92f9e0df6b406f8aa0c73131469c1a753670028d
Author: Danny Wahl <danny@iywahl.com>
Date:   Thu May 15 09:56:16 2014 +0800

    remove duplicate classes from core_renderer