Fix station search bug

When writing "cala" in order to search for "Călărași", it wouldn't work
because only the first ă was replaced with a.

station.js

@@ -11,11 +11,11 @@ function goToStation(station) {
 function searchNormalize(str) {
 	return str
 		.toLowerCase()
-		.replace('ă', 'a')
+		.replaceAll('ă', 'a')
-		.replace('â', 'a')
+		.replaceAll('â', 'a')
-		.replace('î', 'i')
+		.replaceAll('î', 'i')
-		.replace('ș', 's')
+		.replaceAll('ș', 's')
-		.replace('ț', 't')
+		.replaceAll('ț', 't')
 } 
 
 var focusedElement = null