Markup mistake fix.
Admin panel dev.
Categories hierarchy.
Return to top link position and appearance changed.
Permanent redirect if product address is non-actual + category details caching
Routing fix.
Ajax link for subcategories.
Product table page size
Subcategories.

* dev:
  Product table page size
  Ajax link for subcategories.
  Routing fix.
  Permanent redirect if product address is non-actual + category details caching
  Return to top link position and appearance changed.
  Categories hierarchy.
  Admin panel dev.
  Markup mistake fix.
  Official firm name in Contacts (Popov Andrey).
  Offer microdata fix.
  Brand added to YML.
  Product brand field added.
  User roles changed to constants in code.
Merge branch 'master' of https://github.com/alexey-ernest/morastore