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_block.e

@@ -6,7 +6,12 @@ deferred class
 	CMS_BLOCK
 
 inherit
+	COMPARABLE
+
 	DEBUG_OUTPUT
+		undefine
+			is_equal
+		end
 
 feature -- Access
 
@@ -23,6 +28,10 @@ feature -- Access
 	html_options: detachable CMS_HTML_OPTIONS
 			-- Optional addition html options.
 
+	weight: INTEGER
+			-- Weight used to order blocks.
+			-- Default: 0;
+
 feature -- Status report
 
 	is_empty: BOOLEAN
@@ -42,6 +51,14 @@ feature -- Status report
 	conditions: detachable LIST [CMS_BLOCK_CONDITION]
 			-- Optional block condition to be enabled.
 
+feature -- Comparison
+
+	is_less alias "<" (other: like Current): BOOLEAN
+			-- <Precursor>.
+		do
+			Result := weight < other.weight
+		end
+
 feature -- Element change
 
 	add_css_class (a_class: READABLE_STRING_8)
@@ -83,6 +100,12 @@ feature -- Element change
 			l_conditions.force (a_condition)
 		end
 
+	set_weight (w: like weight)
+			-- Set `weight' to `w'.
+		do
+			weight := w
+		end
+
 feature -- Conversion
 
 	to_html (a_theme: CMS_THEME): STRING_8