Rubocop updates (#1118)

* Minimal code style enforcement

* Formatting and lint code updates (no change in functionality)

app/controllers/concerns/authentication.rb

@@ -13,27 +13,27 @@ module Authentication
 
   private
 
-  def authenticate_user!
-    if user = User.find_by(id: session[:user_id])
-      Current.user = user
-    else
-      redirect_to new_session_url
+    def authenticate_user!
+      if user = User.find_by(id: session[:user_id])
+        Current.user = user
+      else
+        redirect_to new_session_url
+      end
     end
-  end
 
-  def login(user)
-    Current.user = user
-    reset_session
-    session[:user_id] = user.id
-    set_last_login_at
-  end
+    def login(user)
+      Current.user = user
+      reset_session
+      session[:user_id] = user.id
+      set_last_login_at
+    end
 
-  def logout
-    Current.user = nil
-    reset_session
-  end
+    def logout
+      Current.user = nil
+      reset_session
+    end
 
-  def set_last_login_at
-    Current.user.update(last_login_at: DateTime.now)
-  end
+    def set_last_login_at
+      Current.user.update(last_login_at: DateTime.now)
+    end
 end