[BioC] Recent course materials now easily searchable

[Dan Tenenbaum]

Bioconductors,

We've made it easier to find course materials on our website. You can go to

http://www.bioconductor.org/help/course-materials/

(also accessible from our home page as the "Recent courses" link in the "Learn" box)

Courses are searchable and sortable by keyword, course name, title, date, and more.

Thanks to everyone who attended BioC2014 and gave us feedback which prompted this change.

Dan