To-do's and unfinished files

The following are files with unfinished functionalities and/or to-do's. These are ignored during linting through the .flake8 config file. Once we get to assessing these, feel free to break them up into individual issues, some will take longer to resolve than others.

libpyhat/Unmixing/ELMM_ADMM.py,
libpyhat/transform/dim_reductions/jade.py
gui/core/crossValidateMethods/cv_GP.py
libpyhat/regression/cv.py
libpyhat/IO/io_ccam_pds.py
gui/util/Qtickle.py