Return default facility name when user name is undefined

Closes #678.

src/004-base/facility.js

@@ -245,7 +245,8 @@ App.Entity.Facilities.Facility = class {
 	/** Facility display name
 	 * @returns {string} */
 	get name() {
-		return State.variables[this.desc.baseName + "Name"];
+		const res = State.variables[this.desc.baseName + "Name"];
+		return res !== undefined ? res : 'the ' + this.genericName;
 	}
 
 	/** Facility generic name ("Brothel", "Schoolroom", etc.)