Migration to enabling postgresql extension for SoPR-platform. This will fix the current build error.

add_unaccent_pgsql_extension.rb

# Copy paste this motherfucker after running $ ./bin/rails g migration AddUnaccentPgsqlExtension
require_relative '20130921141716_add_unaccent_extension'

class AddUnaccentPgsqlExtension < ActiveRecord::Migration
  def up
    revert AddUnaccentExtension
    enable_extension 'unaccent'
  end

  def down
    disable_extension 'unaccent'
  end
end