PEP8 compliance edits
* Fixed delkey.py, encrypt-to-all.py, exportimport.py and inter-edit.py for PEP8 compliance. * Removed PyGtkGpgKeys.* and pygpa.* due to massive number of errors in conversion process, PEP8 compliance and reliance on a gtk module that is not present in PyPI, with no indication as to its origin or source.