Issue #84: Paginate Actions

Addresses #84 
Added generic getPaginationData() function for findAndCountAll results.
Moved .get('/actions') logic to showActions() function.
Extend templateData in showBlocks() and showActions() with paginationData.
Rather than extracting these to blocksCount etc., and then assigning block_count: blocksCount in the template data, how about updating the template to reference item_count and item_rows directly?