This should fix issue #295. It doesn't matter where in the template the pageclass identifiers are so long as they're there.  They shouldn't come before the inclusion of the base template because then they are rendered before the doctype declaration, which confuses IE.
Moving the pageclass declaration so as not to confuse IE (see #295)
Forgot to update the blog index template as well
Advertising the bootcamp for WiSE
Merge branch 'master' of github.com:gvwilson/website into blog
Merge branch 'master' of github.com:swcarpentry/website into blog
Merge pull request #321 from gvwilson/master

Merging change to submodule. Updates for #295.
Merge pull request #295 from iguananaut/issue-295

Menu bar on web site fails on Internet Explorer
Merge pull request #322 from gvwilson/pageclass

Moving the pageclass declaration so as not to confuse IE (see #295)
Merge branch 'master' of github.com:swcarpentry/website into blog