Merge branch '588-default-ul-logo-is-invalid' into 'master'

Resolve "default ul logo is invalid"

Closes #588

See merge request !537

model/src/main/java/lcsb/mapviewer/model/user/ConfigurationElementType.java

@@ -54,7 +54,7 @@ public enum ConfigurationElementType {
   /**
    * Logo presented in the system.
    */
-  LOGO_IMG("Logo icon", "udl.png", ConfigurationElementEditType.URL, false,
+  LOGO_IMG("Logo icon", "resources/images/udl.png", ConfigurationElementEditType.URL, false,
       ConfigurationElementTypeGroup.LEGEND_AND_LOGO),
 
   /**