public int getPaginationBarStartIndex() {
    this.paginationBarStartIndex = Math.max(this.currentPage - this.pageBarLength / 2, 1);
    return this.paginationBarStartIndex;
  }
Computes the paginationBarStartIndex. It is computed such that the currentPage
remains at the center of the Pagination Bar.

@return The start Index of the Pagination bar
app/controllers/PaginationStats.java