add dejavu sans to heading font list

css/cdm.css

@@ -141,7 +141,7 @@ div.cdm.expandable div.cdmHeader a.title {
 	transition : color 0.2s;
 	text-rendering: optimizelegibility;
 	font-family : "Segoe WP Semibold", "Segoe UI Semibold", 
-		"Segoe UI Web Semibold", "Segoe UI", Ubuntu, "Helvetica Neue",
+		"Segoe UI Web Semibold", "Segoe UI", Ubuntu, "DejaVu Sans", "Helvetica Neue",
 		Helvetica, Arial, sans-serif;
 }
 
@@ -155,7 +155,7 @@ div.cdm.expandable.active div.cdmHeader a.title {
 	font-weight : 600;
 	text-rendering: optimizelegibility;
 	font-family : "Segoe WP Semibold", "Segoe UI Semibold", 
-		"Segoe UI Web Semibold", "Segoe UI", Ubuntu, "Helvetica Neue",
+		"Segoe UI Web Semibold", "Segoe UI", Ubuntu, "DejaVu Sans", "Helvetica Neue",
 		Helvetica, Arial, sans-serif;
 }
 
@@ -171,7 +171,7 @@ div.cdm.expanded div.cdmHeader a.title {
 	transition : color 0.2s;
 	text-rendering: optimizelegibility;
 	font-family : "Segoe WP Semibold", "Segoe UI Semibold", 
-		"Segoe UI Web Semibold", "Segoe UI", Ubuntu, "Helvetica Neue",
+		"Segoe UI Web Semibold", "Segoe UI", Ubuntu, "DejaVu Sans", "Helvetica Neue",
 		Helvetica, Arial, sans-serif;
 }
 
@@ -312,7 +312,7 @@ div#floatingTitle a.title {
 	font-weight : 600;
 	text-rendering: optimizelegibility;
 	font-family : "Segoe WP Semibold", "Segoe UI Semibold", 
-		"Segoe UI Web Semibold", "Segoe UI", Ubuntu, "Helvetica Neue",
+		"Segoe UI Web Semibold", "Segoe UI", Ubuntu, "DejaVu Sans", "Helvetica Neue",
 		Helvetica, Arial, sans-serif;
 }
 

css/tt-rss.css

@@ -1008,7 +1008,7 @@ body#ttrssMain #feedTree {
 	height : 100%;
 	overflow-x : hidden;
 	text-rendering: optimizelegibility;
-	font-family : "Segoe UI Web", "Segoe UI", Ubuntu, "Helvetica Neue",
+	font-family : "Segoe UI Web", "Segoe UI", Ubuntu, "DejaVu Sans", "Helvetica Neue",
 		Helvetica, Arial, sans-serif;
 }