adding dropdown option for pipeline

Merge changes

Feature Added: Mass Removal for List Members

Fix manage.py mmclient command for non-IPython shells. Contributed by Ankush Sharma (LP: 1428169).

Mozilla Persona integration: switch from django-social-auto to django-browserid: Contributed by Abhilash Raj.

replace django-social-auth with django-browserid

Fixed #1428543.

Fixed the issue #1428169.

Added missing MANIFEST.in items (Given by Aurélien Bompard).

And also include text-based templates

Also include VCR records

Also include tox.ini and dev-requirements.txt

Include the testing directory in the sdist tarball

removed unnecessary installation instruction from dev docs

* added tox to dev dependencies ...

* removed duplicate dependency file
* dev docs text change

small text change in dev docs

dev docs: note added

* Reworked internal testing ...

* Documentation update

renamed tox env `rerecord` => `record`

typo in development docs

* add testing documentation ...

* add a sample mailman.cfg for testing

add env for fixture re-recording to tox.ini

reduced number of vcr cassette files used in current tests

modified vcrpy setting to use yaml instead of json; add more testing documentation (draft)

Some documentation cleanup; New testing section (draft)

Bump Copyright Years

added doc build dir to .bzrignore

- removed documentation build from repository ...

- removed an unused rst file
- removed some outdated development documentation

- set minimum Django version to 1.5 in setup.py ...

- setup.py pip8 fixes

remove dpulicate fixtures dir