Sensei - Sensei relationships should be verified.

[lancew]

Following discussions with Dr Mike Callan:

Relationships between sensei should be verified, so that the data is more reliable. For example, Charles Palmer though often mentioned as having trained with Kano; as I understand it; could not have due to not having trained at Kodokan before Kano's death.

We want to allow anyone to "suggest" a relationship (entry in sensei_sensei table), but trusted users would be able to set a "verified" field to true on the rows in the table to show that relationship is verified (maybe some logging?).

I imagine in the UI dotted lines connecting unverified relationships and solid lines showing verified links. Perhaps grey coloured text for non verified coaches in your tree?