Appeon branding

All the company branding mentioned in the product and the documentation is updated to Appeon for InfoMaker and PowerBuilder.

For current information on PowerBuilder and InfoMaker documentation, go to: https://docs.appeon.com.

For latest release notes on PowerBuilder and InfoMaker, go to https://docs.appeon.com/pb2019r3/release_bulletin_for_pb/index.html (for PowerBuilder) and https://docs.appeon.com/im2019r3/release_bulletin_for_im/index.html (for InfoMaker).