internationalize text

[keturn]

Some widgets have user-facing text, sometimes in tooltips

TeraNUI/nui/src/main/java/org/terasology/nui/WidgetUtil.java

Lines 160 to 161 in f6e444f

	// TODO: Translate
	button.setTooltip("Expand");

or labels

TeraNUI/nui/src/main/java/org/terasology/nui/widgets/types/builtin/object/ObjectLayoutBuilder.java

Lines 37 to 38 in f6e444f

	private static final String NULL_LABEL = "Object is null.";
	private static final String MODIFY_LABEL = "Modify Object";

or other buttons

TeraNUI/nui/src/main/java/org/terasology/nui/widgets/types/builtin/util/GrowableListWidgetBuilder.java

Lines 114 to 115 in f6e444f

	// TODO: Translate
	addElementButton.setText("Add Element");

Any text that appears as part of the UI on screen should be translatable. The above are examples, not an exhaustive list, and they might not all have such helpful "TODO" markers on them.

Use existing NUI translation interfaces if possible.