Adds pt_BR translation
Updates ru_RU
Updates readme
Adds filters to control whether friend/follow requests are send on invitation acceptance
Readme update
Bumps version numbers to 1.0.18
When pulling up list of site members on group invites, don't fetch WP_User

This was causing memory timeouts on very large installations
Readme update
Fixes prepare() warnings
Updates readme
Bumps version numbers to 1.0.19
Merge branch '1.0.x'