Merge branch 'pylint'
Lots of pylint fixes courtesy of Alex Chernetz.
* pylint:
doc: add Alex to the credits
cmds: fix bug in OpenParentDir()
widgets.standard: refactor widgets generated with bind_mixin() for pylint
widgets.main: replace editremotes.edit() with editremotes.remote_editor()
widgets.archive: fix name conflict in GitArchiveDialog
widgets.spellcheck: fix context_menu() call in contextMenuEvent()
models.browse: replace NotImplemented with NotImplementedError
interaction: add missing argument in confirm_config_action()
core: replace cmd with argv
compat: replace os.environment with os.environ
app: replace core.setenv with compat.setenv
Closes #227
Signed-off-by: David Aguilar <davvid@gmail.com>