[nemo-qml-plugin-contacts] Do not suppress E.164 numbers which match when minimized. Fixes JB#20513

E.164 numbers beginning with a +' are complete; therefore even if
they match in minimized form, they are distinct numbers.
Merge pull request #107 from matthewvogt/jb20513

[nemo-qml-plugin-contacts] Do not suppress E.164 numbers which match when minimized. Fixes JB#20513