minor change
add maschine data in plot for comparisson
enable export of displacement data in directory
"/simdb/simdata/exp_st
switch settings (minor)
set "plain_concrete_flag" to "False"; E_mats = E_c
for plotting yarn stiffness in tensile test get 'E_tex' from
'matdb/TRC'; Note: cross-section returns highest value of all layers;
export of figures redirected to 'simdb'