Merging postreleasefix/86 to master
Merging postreleasefix/86 to master

* postreleasefix/86:
  [ENSWEB-3268] Explicitly set session cookie to main domain

Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode