Zurb layout for Feed Admins, fixes #ORG-1978
fixed padding on mobile and wrapping filter's button group. fixes #ORG-1975
Do not wrap text in tags on small devices, fixes #ORG-1974
Added check if addthis is defined and moved to the end of function to not break other features. fixes #ORG-1980
Addthis icon tuning. fixes #ORG-1976