Added famfamfam silk icons as submodule.
Added 'log_error' function.
Merge branch 'master' of github.com:crwilliams/Event-Feed-Aggregator

Conflicts:
	lib/utils.php
Renamed parameter and added documentation.
Corrected indentation.
Added 'retriggerErrors' function.
Added 'makeProvenanceInfo' function.
Added feed name as rdfs:label.
Use 'item' tags rather than 'event' tags to denote xml array items.
Major provenance and error handling updates.
Added provenance and error viewer.