Improve plotting by replacing the rolling mean implementation

[sroener]

This should be a replacement for the rolling function. Test with TSS

from scipy.ndimage import uniform_filter1d

if smoothing:
       if rolling:
           sample = sample.apply(lambda x:savgol_filter(x,window_length=21, polyorder=2))
           sample = sample.apply(lambda x:x-uniform_filter1d(x, 200))
       
       else:
           sample = sample.apply(lambda x:savgol_filter(x,window_length=21, polyorder=2))
           
   else:
       if rolling:
           sample = sample.apply(lambda x:x-uniform_filter1d(x, 200))