Update images from informs_student_paper branch

	modified:   images/burg.fig
	new file:   images/burg.pdf
	deleted:    images/burg.png
	new file:   images/burg_decrease_condition.fig
	new file:   images/burg_decrease_condition.pdf
	modified:   images/burg_zero.fig
	new file:   images/burg_zero.pdf
	deleted:    images/burg_zero.png
	new file:   images/gammaprime_diff_samples_dim_10.pdf
	deleted:    images/gammaprime_diff_samples_dim_10.png
	modified:   images/kl.fig
	new file:   images/kl.pdf
	deleted:    images/kl.png
	modified:   images/mchi2.fig
	new file:   images/mchi2.pdf
	deleted:    images/mchi2.png
	new file:   images/mchi2_decrease_condition.fig
	new file:   images/mchi2_decrease_condition.pdf
	new file:   images/prob_dec_cost_v_gammaprime_no_context.pdf
	deleted:    images/prob_dec_cost_v_gammaprime_no_context.png
	new file:   images/prob_dec_cost_v_gammaprime_no_context_multiple.pdf
	deleted:    images/prob_dec_cost_v_gammaprime_no_context_multiple.png
	new file:   images/prob_dec_cost_v_nl_n_20.pdf
	deleted:    images/prob_dec_cost_v_nl_n_20.png
	new file:   images/water_prob_decrease.pdf
	deleted:    images/water_prob_decrease.png
	new file:   images/worst_case_probability.pdf
	deleted:    images/worst_case_probability.png
Add fig2pdf.m frmo informs_student_paper

	new file:   images/fig2pdf.m
Update tex and bib to reflect changes from informs_student_paper