build: use a variable for the project title

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
build: add p2 landing pages

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
build: clarify the license of the files

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
gradle: clarify the license of the files

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
build: update the build instructions

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>