nexu-1.15

• pom changed after closing of joinup.ec.europa.eu maven repository
• Using JRE 32 instead of 64 for nexu-bundle
• Put repositories in root pom
• Optionally display informative popups
• Upgrade DSS version to 5.3
• Certificate selection screen improvements
• Conform to MS guidelines for placing config folder
• Splash screen
• Popup screens titles
• Make CORS allowed origin configurable
• Assist user in providing feedback
• Remove background data transfer
• Make incident report optional