Command for migrating existing sessions to the new session store

[ivorbosloper]

When converting an in-production site from django.contrib.sessions to django-user-sessions this python manage.py sessions_to_usersessions.py command allows you to maintain existing sessions (keep already logged-in users logged-in) and make the transition smooth.

[coveralls]

Coverage decreased (-9.33%) to 84.59% when pulling 24a9830 on ivorbosloper:convert_sessions into 555144f on Bouke:master.

[Bouke]

Hi @ivorbosloper, thanks for your contribution. Could you also write a small explanation of this command in the documentation, for helping other users making the switch? Furthermore, the coverage would decrease to 85% after merging ☔. Would it be feasible to also provide a simple unit test? Otherwise I could write one, but might take a while to find the free time required.

[Bouke]

Hi @ivorbosloper, thanks again for your contribution. Would it be feasible to also provide a unit test anywhere in the near future? Without a validation of the contribution I cannot merge this pull request.

[codecov]

Codecov Report

Merging #33 into master will decrease coverage by 0.42%.
The diff coverage is 82.35%.

@@            Coverage Diff             @@
##           master      #33      +/-   ##
==========================================
- Coverage   93.75%   93.32%   -0.43%     
==========================================
  Files          14       15       +1     
  Lines         608      659      +51     
  Branches       31       35       +4     
==========================================
+ Hits          570      615      +45     
- Misses         30       34       +4     
- Partials        8       10       +2

Impacted Files	Coverage Δ
user_sessions/templatetags/user_sessions.py	95.08% <100%> (ø)	⬆️
...er_sessions/management/commands/migratesessions.py	81.25% <81.25%> (ø)
user_sessions/utils/tests.py	98.35% <0%> (+0.1%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 2719255...6372c4b. Read the comment docs.

[Bouke]

Nice PR and great to see there's a test for it as well. If you could resolve the two comments, then I'd be happy to merge this!

[Bouke]

This variable isn't used, no need to assign it.

[Bouke]

No need for adding these ignores, I prefer to have these in my global gitignore.

[ivorbosloper]

Valid points, I've improved the pull-request...

[Bouke]

Thank you, I've merged the PR! 👍