RelaxWorkChain Result Tab should display the PK of optimized structure

[AndresOrtegaGuerrero]

After running a RelaxWorkChain , the tab doesn't tell the user what is the PK of the optimized structure.

The app should also add a description to the StructureData like "optimized structure" so later it can facilitate the search of such structures, and to let the users know that this is StructureData is from a RelaxWorkChain.