loads categories from database
loads item data from database, but not image and priceLT is not formatted.
formats item price in LT to .xx
allows to browse items by category, adds "Visos prekės" button to see all items.
moves pagination out of the main-container, so it does not randomly come up to the top
splits main.html.twig into separate files.
Merge remote-tracking branch 'origin/master'