added MapUtils to deal with object/string translation in acs7

src/main/java/com/inteligr8/alfresco/acs/MapUtils.java

@@ -0,0 +1,22 @@
+package com.inteligr8.alfresco.acs;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Map.Entry;
+
+public class MapUtils {
+	
+	public static Map<String, String> toStringMap(Map<String, ?> map) {
+		if (map == null)
+			return null;
+		
+		Map<String, String> strmap = new HashMap<>(map.size());
+		for (Entry<String, ?> element : map.entrySet()) {
+			String strvalue = element.getValue() == null ? null : element.getValue().toString();
+			strmap.put(element.getKey(), strvalue);
+		}
+		
+		return strmap;
+	}
+
+}