synch figure: now color code is through all 1-10 IPSPs and the lines go
through 0,0 point
Made supplementary figure function and on the way added some features to
other functions (no crucial change)
corrected problem with finding IPSP - number; problem with plotting not
with analysis.
added saving supp figure
resolved problem with removal of too small SPWs
updated supp plot; from now there are 5 subplots
changed supp figure 3rd subplot to show beginning of IPSPs instead of
raw spikes