Add 3 people list test to f1 people data provider
F1 data provider - add test for person in more than one group
Test and a fix for sync options off for f1 people data provider

The fix being only adding groups to a person if sync groups is set to true.
Tidy up some code in f1 data provider
Correct phpdoc for people data provider
Rename isProviderFor to isDataProviderFor