Allow for the number of contacts to be changed through the Advanced Settings

[jimmylogan]

Currently, the default number of contacts is three and some of the participants in the UX Lab in Kampala said that they thought that this should be reconfigured.

I suggest we allow users to change the number of contacts in the Advanced Settings section. I think that we should not allow them to be changed in the Contact Settings/ Setup Contacts page but suggest we put a bullet point above the Security Tips which says:

"We recommend a default of three contacts but you can increase the number of contacts in the Advanced Settings"