Renamed trigger.
Migration for all missing updatedAt values.

It seems only users collection is having them, but still, migration is
applied to all collections having updatedAt field.
Revert "Renamed trigger."

This reverts commit dfa3a1961eed61144b09b2e380dcfebffb800ebd.

Conflicts:
lib/documents/accounts.coffee
Merge branch 'development' of github.com:peerlibrary/peerlibrary into development