Saving second draft version

	modified:   2-thesis/src/evaluation.tex
	modified:   2-thesis/src/introduction.tex
	modified:   2-thesis/src/soa_p2p.tex
	modified:   2-thesis/src/soa_p2p_trust.tex
	modified:   2-thesis/src/soa_p2p_user_identification.tex
	modified:   2-thesis/src/system.tex
	modified:   2-thesis/src/validation.tex
	modified:   2-thesis/thesis.tex
	deleted:    img/can_structure.pdf
	deleted:    img/di.pdf
	deleted:    img/social_graph.pdf
	deleted:    img/utfsm.pdf