fix: added dropdown-menu-right to keep header stats dropdown in viewport

Author: ErikBjare

_includes/header.pug

@@ -33,7 +33,7 @@ html
               a.nav-link.dropdown-toggle.font-weight-bold#navbarDropdown(href='#', role='button', data-toggle='dropdown', aria-haspopup='true', aria-expanded='false')
                 i.fa.fa-bolt.mr-2
                 | Stats
-              .dropdown-menu(aria-labelledby='navbarDropdown')
+              .dropdown-menu.dropdown-menu-right(aria-labelledby='navbarDropdown')
                 a.dropdown-item.text-secondary.font-weight-bold(href='/stats/')
                   i.fa.fa-download.mr-2
                   | Downloads & Users