Inaccuracies in developer page diagram

[allanday]

I love the idea of visually communicating the way Flatpak works and the current graphic looks great. There are a few issues I see with it though:

• Runtimes are available inside the sandbox, but they are portrayed as being outside.
• The animated lines represent very different things - the build process, calling a library at runtime, and IPC between app and operating system. However, they look equivalent, and to my eyes all look like IPC.
• The graphic doesn't represent the way that runtimes depend on operating systems, and apps depend on runtimes.
• It would be nice if the graphic could communicate that runtimes (and SDKs) contain libraries.
• The operating system block uses a GNOME logo; this might be confusing to a lot of people.

How some of these issues could be addressed:

[jimmac]

commited a fix in 6a759c6