Added feed aggregation module.

Improved the CMS Block system to support condition.

src/kernel/content/block/condition/cms_block_condition.e

@@ -0,0 +1,24 @@
+note
+	description: "Condition for block to be displayed."
+	date: "$Date$"
+	revision: "$Revision$"
+
+deferred class
+	CMS_BLOCK_CONDITION
+
+feature -- Access
+
+	description: READABLE_STRING_32
+		deferred
+		end
+
+feature -- Evaluation
+
+	satisfied_for_response (res: CMS_RESPONSE): BOOLEAN
+		deferred
+		end
+
+note
+	copyright: "2011-2015, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
+	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
+end