cleanup + adding error instead of message for catched exceptions

fixed import error setting - handled exception missing http_request during test

testlayer removed debug of duplication and added MAILMAN_DIR

added module to start/stop mailman with temp config file for use in doctests

fixed tests to fit current view names and added comment for debug layer errors

add: list-Selector in template and lists views

added missing existing doctest as text only backup

added mass subscription tests - noted duplicated test content issue

added test for new Domain and List

first test working

first test working

Added indent and line breaks for to be compatible with the automatic rendering of documentation.

Added copyright statements, changed import logic and moved templates.

Added user and membership settings test and headings for each section in the doctests.

Added line breaks to make the tests follow pep8 (where possible).

Added doctests for the UI.