GUI language settings in user.properties without effect

**robert.strauch+apache** ([Bug 59751](https://bz.apache.org/bugzilla//show_bug.cgi?id=59751&redirect=false)):
DESCRIPTION

The GUI language is not changed when settings are done in user.properties. If the settings are located in jmeter.properties the GUI language is set to the configured language.

This didn't happen in JMeter 2.13. Language settings from user.properties worked properly.

STEPS TO REPRODUCE

1)
Stop JMeter.

2)
Edit user.properties in JMeter bin directory and add the following settings.

language=en
locales.add=en

3)
Start JMeter via jmeter.bat. The GUI is set to German default locale language.

4)
Move the settings to jmeter.properties and restart JMeter. The GUI is set to the configured language.

Created attachment [gui_user.properties.png](https://apache.github.io/jmeter-bugzilla-attachments/51/59751/33982/gui_user.properties.png): Screenshot showing GUI with language settings in user.properties

OS: All