Determine what packages can be pulled from conda

[davecash75]

Idenfity which of these go into the environments.yml file and which need more special care:

• [x] nipype
• [x] fsleyes
• [x] pandas
• [x] requests
• [x] datalad
• [x] scikit-learn
• [x] combat
• [x] cmake
• [x] niftyreg

[davecash75]

fsleyes needs opengl/mesa installed. Will look inot this.

[davecash75]

niftyreg successfully pulled and compiled using postbuild step

[davecash75]

fsleyes installed but a new issue will be needed to determine if we can launch it from JupyterLab