added rake task to import events
Purge old classifieds.
Run the indexer when Cron decides to run.
Add the purge_outdated_classifieds rake task which removes ads that a…
…re over 30 days old.
Add a batched ActiveRecord extension.
* Implements a batched class method for models to select records for a model
in batches without putting too much strain on the database server.
+ app skeleton