Improve a11y (#1841)

Improve accessibility by removing unnecessary tags without hrefs. Also remove many eslint errors and warnings.

scm-ui/ui-webapp/src/users/components/navLinks/EditUserNavLink.test.tsx

@@ -29,7 +29,7 @@ import EditUserNavLink from "./EditUserNavLink";
 
 it("should render nothing, if the edit link is missing", () => {
   const user = {
-    _links: {}
+    _links: {},
   };
 
   const navLink = shallow(<EditUserNavLink user={user} editUrl="/user/edit" />);
@@ -40,9 +40,9 @@ it("should render the navLink", () => {
   const user = {
     _links: {
       update: {
-        href: "/users"
-      }
-    }
+        href: "/users",
+      },
+    },
   };
 
   const navLink = shallow(<EditUserNavLink user={user} editUrl="/user/edit" />);