Added a <link> tag to layout when we are on a project page to tell the browser about the build history RSS
Added a <link> tag to layout when we are on a project page to tell the browser about the build history RSS

Signed-off-by: Nicolás Sanguinetti <1d8af7658832ccba63a5fb451212db42cc352c29@nicolassanguinetti.info>
dkastner/prism_ci,p/integrity,integrity/integrity,p/integrity,faradayio/ci1,erik-escobedo/integrity,integrity/integrity,faradayio/ci1,forresty/integrity,integrity/integrity,factorylabs/integrity,factorylabs/integrity,erik-escobedo/integrity,forresty/integrity