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

* postreleasefix/86:
  ENSWEB-3174: do not show mobile site url if there is none

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