Fixed bug in section metadata writing.
Fixed bug in section metadata writing.

freizl/freizl.github.com-old,freizl/freizl.github.com-old,freizl/freizl.github.com-old,beni55/hakyll,freizl/freizl.github.com-old,freizl/freizl.github.com-old,freizl/freizl.github.com-old,Minoru/hakyll,Javran/hakyll,freizl/freizl.github.com-old,oldmanmike/hakyll,d12frosted/hakyll