Implement .birthAll

[A554551N]

birthAll should pull all tickets in a pending birth state and update the create date and owner for each pup inside of each ticket.

• might need to implement a more efficient update method to reduce db latency (execute_many() should work for this)
• Currently pups are stored inside of ticket in a copy that could (but should not) diverge from the database copy. Discovered an error that can arise when the Creature model is changed between ticket creation and birth. Consider storing only ID #s in tickets and pulling creatures from db when needed? This increases latency but prevents deviation from authoritative db copy. Alternately, can treat ticket copy as authoritative and overwrite db as in current implementation.

[A554551N]

feature is implemented provisionally as part of milestone 0.3.0 code here is heavily impacted by latency (makes a large number of db calls in a small space. This method should be refactored asap to reduce latency.