Remove greyshade theme
* .themes/greyshade 98c94a5...0000000:

Change-Id: I8380156d024a37ad9bebbd0598498fffe14aa4b4
Reviewed-on: https://gerrit.causes.com/23034
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>
Switch to 'cleanpress' theme

A simpler, cleaner theme:
http://carmo.org.uk/cleanpress-octopress-theme/

Change-Id: I3f5ca1fd177090d8041b42f37da88e4778c2ffa0
Reviewed-on: https://gerrit.causes.com/23035
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>