LB-1543: Add config to render partial parts

Layout dust changed with blocks for partials.
Changed selector for parts to render.
Merge pull request #83 from nistormihai/LB-1531

LB-1543: Add config to render partial parts
LB-1545 Fix:blog always re-render on 1st load for Zeit
Merge pull request #85 from patriciagarcia/LB-1545

LB-1545 Fix:blog is always re-render on 1st load for Zeit themes
LB-1500 Minor fixes to pagination.

Fixed button-pagination.js to add class to the correct item.
Embed code now takes also the limit.
Pagination nex offext should be current offest plus limit.
Merge pull request #86 from nistormihai/master

LB-1500 Minor fixes to pagination.
LB-1383 Allow posts reordering