Simplify CMS_SERVICE initialization, and CMS server (launcher).

Renamed "layout" lib as "app_env" with APPLICATION_ENVIRONMENT interface.
  applied changed to callers.
Added CMS_THEME.has_region (a_name): BOOLEAN to know if a region is declared in a defined theme.

library/app_env/src/logger/shared_logger.e

@@ -0,0 +1,116 @@
+note
+	description: "Provides logger information"
+	date: "$Date: 2015-02-05 10:25:53 +0100 (jeu., 05 févr. 2015) $"
+	revision: "$Revision: 96584 $"
+
+class
+	SHARED_LOGGER
+
+inherit
+	LOG_PRIORITY_CONSTANTS
+
+	SHARED_EXECUTION_ENVIRONMENT
+
+feature -- Logger
+
+	logger: separate LOGGER
+			-- `log' facility (once per process)
+            -- that could be shared between threads
+            -- without reinitializing it.
+		do
+			Result := logger_cell_item (logger_cell)
+		end
+
+	logger_cell: separate CELL [separate LOGGER]
+		once ("PROCESS")
+			create Result.put (create {separate LOGGER}.make)
+		end
+
+	logger_cell_item (a_cell: like logger_cell): separate LOGGER
+		do
+			Result := a_cell.item
+		end
+
+feature -- Logging
+
+	write_debug_log (m: READABLE_STRING_8)
+		do
+			write_debug_log_to (m, logger)
+		end
+
+	write_information_log (m: READABLE_STRING_8)
+		do
+			write_information_log_to (m, logger)
+		end
+
+	write_warning_log (m: READABLE_STRING_8)
+		do
+			write_warning_log_to (m, logger)
+		end
+
+	write_error_log (m: READABLE_STRING_8)
+		do
+			write_error_log_to (m, logger)
+		end
+
+	write_critical_log (m: READABLE_STRING_8)
+		do
+			write_critical_log_to (m, logger)
+		end
+
+	write_alert_log (m: READABLE_STRING_8)
+		do
+			write_alert_log_to (m, logger)
+		end
+
+feature {NONE} -- Logger: separate implementation			
+
+	write_debug_log_to (m: READABLE_STRING_8; a_log: like logger)
+		do
+			a_log.put_debug (m)
+		end
+
+	write_information_log_to (m: READABLE_STRING_8; a_log: like logger)
+		do
+			a_log.put_information (m)
+		end
+
+	write_warning_log_to (m: READABLE_STRING_8; a_log: like logger)
+		do
+			a_log.put_warning (m)
+		end
+
+	write_error_log_to (m: READABLE_STRING_8; a_log: like logger)
+		do
+			a_log.put_error (m)
+		end
+
+	write_critical_log_to (m: READABLE_STRING_8; a_log: like logger)
+		do
+			a_log.put_critical (m)
+		end
+
+	write_alert_log_to (m: READABLE_STRING_8; a_log: like logger)
+		do
+			a_log.put_alert (m)
+		end
+
+
+feature {NONE} -- Implementation
+
+	initialize_logger (app: APPLICATION_ENVIRONMENT)
+		local
+			l_logger: LOGGER
+		do
+			create l_logger.make_with_environment (app)
+			set_logger_to (l_logger, logger_cell)
+		end
+
+	set_logger_to (a_logger: separate LOGGER; a_cell: like logger_cell)
+		do
+			a_cell.replace (a_logger)
+		end
+note
+	copyright: "2011-2015, Javier Velilla, Jocelyn Fiat, Eiffel Software and others"
+	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
+end