Links in head will now include translated versions of each page including itself

Changes to reflect missing information in the head. Quote from Googles website (source below):
"If you have multiple language versions of a URL, each language page in the set must use rel="alternate" hreflang="x" to identify all language versions including itself."

https://support.google.com/webmasters/answer/189077?hl=en&ref_topic=2370587