modify post content navigation markup to support bootstrap styling
modify post content navigation markup to support bootstrap styling

salcode/bootstra.386-genesis,bryanwillis/bootstrap-genesis,bryanwillis/bootstrap-genesis,michaelcarwile/bootstrap-genesis,bryanwillis/bootstrap-genesis,salcode/bootstrap-genesis,salcode/bootstrap-genesis,salcode/bootstra.386-genesis,salcode/bootstrap-genesis,michaelcarwile/bootstrap-genesis,michaelcarwile/bootstrap-genesis