complexcircle.py: fix normalization issues
complexcircle.py: fix normalization issues

The numpy.sign behavior for complex variables is different from Matlab's
which projects a complex vector element-wise on the complex unit circle.

Signed-off-by: Niklas Koep <342d5290239d9c5264c8f98185afedb99596601a@gmail.com>

pymanopt/pymanopt,nkoep/pymanopt,tingelst/pymanopt,nkoep/pymanopt,nkoep/pymanopt,pymanopt/pymanopt