Changed gui of Hecataeus.

We have static parts (file structure, graph with labels in relation nodes) and the use case parts (impact analysis/policy).  Also we have a reporting area at the bottom.

Pending: a) the impact analysis/rewritting parts to have it's own tabs (affected nodes, rewritten nodes etc), b) the impact analysis/rewritting parts to give information at information area, c) can we hide labels?