Get rid of left outer joins for GameReviewsSummary

[norraxx]

problem: game_stats is big table, and during slow query joining game_reviews_summary cost us memory and cpu in production.

Solution:

  @OneToOne(fetch=FetchType.LAZY)
  @PrimaryKeyJoinColumn
  @UpdatePermission(expression = "Prefab.Role.All")
  @BatchSize(size = 1000)
  public GameReviewsSummary getReviewsSummary() {
    return reviewsSummary;
  }