java/bluej: Update to 4.1.1

• Change minimum supported JDK version to 8u60
• Take maintainership
• Remove fallback MASTER_SITE (no longer available)
• Add LICENSE details
• Add dependency on openjfx to fix runtime error
• Set NO_ARCH=yes
• Add desktop entry
• Move install location to ${JAVASHAREDIR}/${PORTNAME} as per porter's handbook

PR: 221162
Approved by: lme (previous maintainer)