upgrade from 4.0 to 4.2 problem
Created by: atian25
after upgrade from 4.0 to 4.2
https://github.com/gitlabhq/gitlabhq/wiki/From-4.0-to-4.1 https://github.com/gitlabhq/gitlabhq/wiki/From-4.1-to-4.2
visit project got 500 error
the log: https://gist.github.com/atian25/5035614
