Fix ::getVideo_Channel()

Set default $limit and $offset for ::getVideo_Channel()
Fix ::getVideo_Followed()

Set default values for $limit and $offset in ::getVideo_Followed()
Fix ::getTopVideos()

Set deault values for $limit and $offset in ::getTopVideos()
Fix ::getChannelSubscribers()

Set default values for $limit and $offset in ::getChannelSubscribers()
Fix ::getTeams()

Set default values on $limit and $offset in ::getTeams(0