pls consider reducing the number of dependencies

[guai]

graphiti by itself requires 24 bundles which are emf, 6 bundles from eclipse.core, equinox, etc.
But activiti designer requires ~130 and even include jdt.
My goal is try to use it standalone and I'd like it to be less heavy.

[guai]

I was wrong, grafiti.ui requires 75 files
But I still think things like jdt can be optional