Changes to the Atlantides Feed Aggregators

Feeds for the following resources have been added to the Atlantides Feed Aggregators:

• FastiOnline (to Maia)
• Google Ancient Places (to both Maia and Electra)

I've removed Digital Humanities Quarterly from the Electra aggregator because its feed refreshes on a nearly daily basis and each time the entries for the previously published issue are updated to the refresh date. This has the effect of keeping the latest issue of DHQ hovering near the top of the Electra feed long past its publication date, defeating the purpose of the aggregator.