draf of error propagation session

lectures_beamer/error_propagation.tex

lectures_beamer/include/beamer_basics.tex

lectures_beamer/include/mathsymbols.tex

lectures_beamer/include/mvnormal_distribution.tex

mfiles/s_sampling_mapping.m

static/img/KernelGPDS.pdf

static/img/SDE.pdf

static/img/gaussian_process.m.png

static/img/linear_mapping.png

static/img/nonlinear_mapping.png

static/img/s_sampling_mapping_dist.png

static/img/s_sampling_mapping_dist_nl.png

static/img/sand_pile.png