Allow sharing through social media - flag is ignored on the "Tell a Friend" form

The Tell a Friend form was ALWAYS including the social media sharing widget regardless of whether 'sharing through social media' was enabled for the contribution page or event. That form should respect the is_share flag and show or hide the Social Network template with it's links to Facebook, Google+, Twitter ...

Also add text to the Tell a Friend configuration form for events and contribution pages informing the admin:
" If sharing through social media is enabled, links allowing people to share with their social network will also be included on the Tell a Friend form (e.g. Facebook "Like",
Google+, and Twitter)."

NOTE: This info is already included in the help text for Configure Event > Info & Settings > Allow sharing through social media. Adding it to the help for the same field in Configure Online Contribution Page > Title and Settings.

— original post ----
The "Tell a Friend" page includes social media sharing, but this isn't mentioned in the tab for "Tell a Friend" in the event configuration. Please make it mention that social media sharing links will appear and, if possible, give the option to turn them off one-by-one.