Update seo_url.php

Replace "&" to "&amp;" in the query variable
Fix calc of PROFILESTARTDATE with proper "gm" func
Update category.php

getCategories() should have an optional data parameter instead of a required one
Fixed Multi Store Order on Custmor/Orders page
Update seo_url.php
Update stylesheet.css

fixed error show 2 or 3 column
https://github.com/opencart/opencart/issues/1953
https://github.com/opencart/opencart/pull/1966