Fix notifications for developers that don't read the documentation.

doc/development/rake_tasks.md

 # Rake tasks for developers
 
-## Setup db with developer seeds:
+## Setup db with developer seeds
 
 Note that if your db user does not have advanced privileges you must create the db manually before running this command.
 
@@ -8,6 +8,9 @@ Note that if your db user does not have advanced privileges you must create the
 bundle exec rake setup
 ```
 
+The `setup` task is a alias for `gitlab:setup`.
+This tasks calls `db:setup` to create the database, with `add_limits_mysql` it adds limits to the database schema in case of a MySQL database and fianlly it runs `db:seed_fu` to seed the database.
+
 ## Run tests
 
 This runs all test suites present in GitLab.

lib/tasks/seed.rake

+namespace :db do
+  namespace :seed  do
+    desc "Seed is replaced with seed_fu"
+    task :dump => :environment do
+      raise "Please run db:seed_fu instead of db:seed."
+    end
+  end
+end