Improved block condition "path:..." by allowing wildchar.

Added weight data to CMS_BLOCK to be able to sort the block lists,
  and thus order the display of blocks.
Set negative weight for various core block, so that they appear first as expected.
The weight can be set and overwritten in cms.ini , by pref  blocks.{block_id}.weight=integer_weight.

src/kernel/content/cms_smarty_template_block.e

@@ -15,9 +15,12 @@ inherit
 		select
 			out
 		end
+
 	SHARED_TEMPLATE_CONTEXT
 		rename
 			out as tpl_out
+		undefine
+			is_equal
 		end
 
 create