Added CMS_API.request: WSF_REQUEST to ease dev of ROC CMS code.

- Removed CMS_REQUEST_UTIL
  - centralize a few request related code into CMS_API
Added CMS_API.user, CMS_API.set_user (CMS_USER), ... and user related routines.

Refactored Auth related code
  - added various abstractions to factorize implementation and harmonize solutions.
  - revisited the logout strategy.
  - updated the account info page, and remove info user should not care about.
  - simplified the process, and encourage auth module to follow same design.

Added CMS_LINK helper routines to modify the related query string.
Removed CMS_USER.profile (and related routines)
   - It was not used so far.
   - it will probably a specific module later, if needed.

Update various module to avoid fetching user from sql directly, and let this task to CMS_USER_API.

Removed CMS_NODE_API.node_author (a_node: CMS_NODE): detachable CMS_USER,
   - as the info is already in CMS_NODE.author

Added CMS_RESPONSE.redirection_delay, if ever one code want to redirect after a few seconds.
Added the request uri info to the not found cms response.

modules/oauth20/filter/cms_oauth_20_filter.e

@@ -10,15 +10,11 @@ class
 	CMS_OAUTH_20_FILTER
 
 inherit
-	WSF_URI_TEMPLATE_HANDLER
-
-	CMS_HANDLER
+	CMS_AUTH_FILTER_I
 		rename
-			make as make_handler
+			make as make_filter
 		end
 
-	WSF_FILTER
-
 create
 	make
 
@@ -26,7 +22,7 @@ feature {NONE} -- Initialization
 
 	make (a_api: CMS_API; a_user_oauth_api: CMS_OAUTH_20_API)
 		do
-			make_handler (a_api)
+			make_filter (a_api)
 			oauth_api := a_user_oauth_api
 		end
 
@@ -34,21 +30,22 @@ feature {NONE} -- Initialization
 
 feature -- Basic operations
 
-	execute (req: WSF_REQUEST; res: WSF_RESPONSE)
-			-- Execute the filter.
+	auth_strategy: STRING
+		do
+			Result := {CMS_OAUTH_20_MODULE}.logout_location
+		end
+
+	execute (req: WSF_REQUEST; res: WSF_RESPONSE)
+			-- <Precursor>.
 		do
-			api.logger.put_debug (generator + ".execute ", Void)
-				-- A valid user
 			if
 				attached {WSF_STRING} req.cookie (oauth_api.session_token) as l_roc_auth_session_token
 			then
 				if attached oauth_api.user_oauth2_without_consumer_by_token (l_roc_auth_session_token.value) as l_user then
-					set_current_user (req, l_user)
+					set_current_user (l_user)
 				else
 					api.logger.put_error (generator + ".execute login_valid failed for: " + l_roc_auth_session_token.value , Void)
 				end
-			else
-				api.logger.put_debug (generator + ".execute without authentication", Void)
 			end
 			execute_next (req, res)
 		end