Prevent targeting the entire world for a campaign

Recently we had an issue where point radius rows were added to mms_common.pointRadius with a 0.0 latitude/longitude. The campaigns were deployed targeting the world.

If a location targets a point radius, we should validate there is at least one point radii in the list and that have valid latitude, longitude and radius.

If one is invalid or the list is empty, we should send an alert, and either

1. fail the campaign
2. deploy the campaign paused
3. deploy the campaign with an appropriate geo-target to limit spend to the lowest level we can (i.e. country level, or state level).

How to handle this is probably a business decision.