Default behaviour loading user properties file may caue unexpected behaviour

By default a DAST build file called mybuild.xml always looks for mybuild-base.properties and mybuild.properties if you don't specify explicitly a base or user properties file. For example if I run mybuild.xml -d"basePropertiesFile=mybuild-custom.properties" then if mybuild.properties is present in the same directory as the build file it will still be loaded, because the propertiesFile property was not set on the command line. This may cause unexpected behaviour and will be changed so that as long as a basePropertiesFile or propertiesFile property is explicitly specified, no default property files will be loaded.