helios_auth/auth_systems/oauthclient/oauth/CHANGES.txt and
helios_auth/auth_systems/oauthclient/oauth/__init__.py
should/will never be executed, therefore `chmod -x` them.

SQLite doesn't know substring() - only substr() works.

In MySQL, MariaDB and PostgreSQL), substring() and substr() do the same.

... which is what unicodecsv.reader expects.

This reverts 35b5cdab which causes the
tests to error out with

```
======================================================================
ERROR: test_add_voters_file (helios.tests.ElectionModelTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/helios-server/helios/tests.py", line 80, in test_add_voters_file
    vf.process()
  File "/tmp/helios-server/helios/models.py", line 806, in process
    voters = list(self.itervoters())
  File "/tmp/helios-server/helios/models.py", line 767, in itervoters
    for voter_fields in reader:
  File "/usr/lib/python3.6/site-packages/unicodecsv/py3.py", line 55, in __next__
    return self.reader.__next__()
  File "/usr/lib/python3.6/site-packages/unicodecsv/py3.py", line 51, in <genexpr>
    f = (bs.decode(encoding, errors=errors) for bs in f)
AttributeError: 'str' object has no attribute 'decode'
```

Adding redis

Working on responsive booth

Using compatible font

Cleaning up CSS

Adding redis

Revert adding redis

Adding redis

Adding AWS region name

Revert email change

Adding space on question numbers

Adding space on question numbers

Update runtime.txt

Update requirements.txt

Getting from env ADMIN email and name

allow bulk upload of non-password users

Bumps [django](https://github.com/django/django) from 2.2.19 to 2.2.24.
- [Release notes](https://github.com/django/django/releases)
- [Commits](https://github.com/django/django/compare/2.2.19...2.2.24

)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

hash utility should return an ascii string by default, was previously hidden by too-smart django rendering which is no longer the case.

Bumps [bleach](https://github.com/mozilla/bleach) from 1.4.1 to 3.3.0.
- [Release notes](https://github.com/mozilla/bleach/releases)
- [Changelog](https://github.com/mozilla/bleach/blob/master/CHANGES)
- [Commits](https://github.com/mozilla/bleach/compare/v1.4.1...v3.3.0

)

Signed-off-by: dependabot[bot] <support@github.com>

Show election help email address to election administrator, start and end voting date to election administrator and voters.