add l10n message for organizations settings category

sonar-core/src/main/resources/org/sonar/l10n/core.properties

@@ -894,6 +894,7 @@ property.category.general.localization=Localization
 property.category.general.databaseCleaner=Database Cleaner
 property.category.general.looknfeel=Look & Feel
 property.category.general.issues=Issues
+property.category.organizations=Organizations
 property.category.security=Security
 property.category.security.encryption=Encryption
 property.category.java=Java