Refactored and update CMS hooks design. (Move from CMS_RESPONSE to CMS_API).

Moved content_types and content_type_webform_managers from CMS_RESPONSE to CMS_API.
Updated the way to output content (node, ...) to html page.
   See CMS_CONTENT_TYPE_WEBFORM_MANAGER.append_cointent_as_html_to (...).
   Added notion of "teaser" (short version of the content), as opposed to full content.
One can use CMS_API.html_encoder ... when possible, same for `formats', ...
Added bridge from CMS_MODULE_API to CMS_API's encoders.
Added new CMS_TAXONOMY_HOOK used to retrieve list of content associated with a specific term.
Moved up to CMS_RESPONSE a few features which was available only in specific descendants.

Added /taxonomy/term/{termid} implementation.

modules/taxonomy/handler/cms_taxonomy_entity_container.e

@@ -0,0 +1,89 @@
+note
+	description: "Container of entity associated with taxonomy term."
+	date: "$Date$"
+	revision: "$Revision$"
+
+class
+	CMS_TAXONOMY_ENTITY_CONTAINER
+
+inherit
+	ITERABLE [CMS_TAXONOMY_ENTITY]
+
+create
+	make
+
+feature -- Initialization
+
+	make (a_taxo_info: like taxonomy_info; a_limit: NATURAL_32;  a_date: detachable DATE_TIME; a_type: detachable READABLE_STRING_8)
+		do
+			taxonomy_info := a_taxo_info
+			limit := a_limit
+			date := a_date
+			content_type := a_type
+			create items.make (a_limit.to_integer_32)
+		end
+
+feature -- Settings
+
+	limit: NATURAL_32
+			-- Maximum container size.
+
+	date: detachable DATE_TIME
+			-- Contents related to entities listed on `taxonomy_info'.
+
+	content_type: detachable READABLE_STRING_8
+			-- Filter by content type if not Void.
+
+feature -- Access
+
+	taxonomy_info: LIST [TUPLE [entity: READABLE_STRING_32; typename: detachable READABLE_STRING_32]]
+			-- Associated information.
+
+	items: ARRAYED_LIST [CMS_TAXONOMY_ENTITY]
+			-- List of recent events.	
+
+	count: INTEGER
+			-- Number of change items.
+		do
+			Result := items.count
+		end
+
+feature -- Access
+
+	new_cursor: ITERATION_CURSOR [CMS_TAXONOMY_ENTITY]
+			-- <Precursor>
+		do
+			Result := items.new_cursor
+		end
+
+feature -- Change
+
+	force (a_item: CMS_TAXONOMY_ENTITY)
+			-- Add `a_item'.
+		do
+			items.force (a_item)
+		end
+
+feature -- Sorting
+
+	sort
+			-- Sort `items' from older, to newer.
+		do
+			item_sorter.sort (items)
+		end
+
+	reverse_sort
+			-- Sort `items' from newer to older.
+		do
+			item_sorter.reverse_sort (items)
+		end
+
+feature {NONE} -- Implementation
+
+	item_sorter: QUICK_SORTER [CMS_TAXONOMY_ENTITY]
+			-- New change item sorter.
+		once
+			create Result.make (create {COMPARABLE_COMPARATOR [CMS_TAXONOMY_ENTITY]})
+		end
+
+end