removing south for Django 1.7
updating schema migrations for Django 1.7

tests are still broken, need to convert initial_data.json to migrations instead:

https://docs.djangoproject.com/en/dev/releases/1.7/#initial-data

--HG--
extra : amend_source : 75da82976981196b5d42df37b6050caa7e439ba3
creating django auth Groups if they don't already exist
removing deprecated initial_data.json fixtures for 1.7, replacing with data migrations

--HG--
extra : amend_source : 748632edd85d2b293210c2fc899ab8c1b53eb890
replacing forestry fixture with data migration to create demo forestry configuration and required experiment parameters

renaming group_regrowth parameter to regrowth

--HG--
extra : amend_source : 010f49a47895215843f84281a68576d779801a0c
starting to add lighterprints fixture data to migration
migrating lighter footprints parameters and activities data. prefixing lighter footprints parameters with lfp_ because
they will likely not be applicable to other experiments.

need to figure out a better way to namespace Parameters or establish M2M relationships with relevant ExperimentMetadataS

--HG--
extra : amend_source : e6a10fbaa980e420b6f2534666f4e367a23b537b
Adding code to use forked django-cas. Now creating user with CAS provided username if ASU Web Directory is down

--HG--
extra : amend_source : 1f1fef6aaf860aa1bf06dab72997c74d734dded1
- removing hard coded pk lookups from tests
- is_participant now returns False if the user is a demo participant
- changing test loglevel disabling to be based on settings.DISABLED_TEST_LOGLEVEL

--HG--
extra : rebase_source : c7ba8d56190716fe1253b432cc54c1462ae4c59a
extra : amend_source : 300e04cf27bfb8327cf6aa6e86de263fe666c838
- adding final debriefing round to slovakia forestry NC/C configuration
- refactoring test loglevel disabling to be set in the test suite runner, not each individual test's setup

--HG--
extra : amend_source : 92ec236c435481f6ec1cbc4e0a014c3c6fd2a073
adding vcweb test suite runner adapted from http://stackoverflow.com/a/25021711/93370
fixing forestry tests, no longer adding all parameters to experiment metadata
adding missing lighterprints metadata. should add scheduled experiment data migrations as well
adding lighterprints AppConfig to register round started / round ended signal receivers
Adding option to not send email on experiment registration. Fixes Issue #235
- adding select_for_update locks for issue #236 and issue #194
- adding test_email_suffix keyword arg to BaseVcwebTest constructor
- removing hard coded experimenter lookup

--HG--
extra : rebase_source : cb8653b84308379001825e9f118bac60398e21b0
removing defunct json fixtures, refactoring lighterprints treatment type to be experiment configuration specific, not
round configuration specific

--HG--
extra : rebase_source : d4fc580c3be152ccb67f68876471c6d33a348e09
more treatment type refactoring, replacing old date-based queries with round_data based queries for performed activities
fixing lighterprints tests