Cosmetic changes to SdynPy_geometry.py

[yjchan-mech-nchu]

I have tried some cosmetic changes for you to consider:
1 Changed the background to white, font name and font size
2 Added the "show_allcomments" option such that one can either show "all comments in experimental uff 55 mode shapes" or "only showing frequency and damping ratio"
3 In saving the animation, an extra "GIF for reports" to save only the mode shape, ideal for pasting in paper-based reports
4 edited line 3271 such that nodes can be of various colours as specified in the geometry file
sdynpy_geometry.zip