Using e2.py

* [:EMAN2/Galleries/Testimages:Generate and display an EMAN2 test image]

* [:EMAN2/Tutorials/RotateTranslate:Rotate and translate an image]

* [:EMAN2/Tutorials/AddAndMultiply:Add images, and multiply by a constant]

* [:EMAN2/Tutorials/ri2ap:Convert a real/imaginary image into an amplitude/phase image and vice versa]