Updated thesis, begining evaluation of the system.

	new file:   2-thesis/src/eval_transaction_service.tex
	new file:   2-thesis/src/evaluation.tex
	modified:   2-thesis/src/soa_p2p_user_identification.tex
	modified:   2-thesis/src/system.tex
	modified:   2-thesis/thesis.tex
	modified:   bib/paper.bib