Mongo dbref expansion#525

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mcleae wants to merge 4 commits intorichardwilly98:masterfrom

RentTheRunway:mongo-dbref-expansion

Commits on Apr 23, 2015

expand mongo dbrefs when possible
Eduardo McLean
committed

Commits on Apr 24, 2015

Adding tests for dbref expansion
Eduardo McLean
committed

Commits on Apr 27, 2015

replacing deprecated methods
Eduardo McLean
committed
Adding config for enabling/disabling dbref expansion
Eduardo McLean
committed