Added feed aggregation module.

Redesigned the CMS_BLOCK system,
   - added condition attribute. It can be set via configuration file
     with
     [blocks]
      {blockid}.region={region_name}
      {blockid}.conditions[]=is_front
      {blockid}.conditions[]=path:location-path/foo/bar
   - For backward compatibility, the CMS will check only conditions for block name prefixed by "?".
Improved the configuration library to support list and table properties.
Updated theme for now, to include the feed examples.
Added "cache" classes, to ease caching of html output for instance. (TODO: improve by providing a cache manager).

src/hooks/cms_hook_block.e

@@ -15,6 +15,8 @@ feature -- Hook
 
 	block_list: ITERABLE [like {CMS_BLOCK}.name]
 			-- List of block names, managed by current object.
+			-- If prefixed by "?", condition will be check
+			-- to determine if it should be displayed (and computed) or not.
 		deferred
 		end
 
@@ -23,4 +25,7 @@ feature -- Hook
 		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