feat: Python 3.10 and Django 4.1 support

[fsbraun]

The django-cms 4 test fails since django cms 4 is not yet Python 3.10 ready.

[codecov[bot]]

Codecov Report

Merging #68 (6a1db04) into master (a03e04d) will increase coverage by 0.37%. The diff coverage is 84.21%.

@@            Coverage Diff             @@
##           master      #68      +/-   ##
==========================================
+ Coverage   86.06%   86.44%   +0.37%     
==========================================
  Files         105      105              
  Lines        2798     2810      +12     
  Branches      288      285       -3     
==========================================
+ Hits         2408     2429      +21     
+ Misses        294      290       -4     
+ Partials       96       91       -5     

Impacted Files	Coverage Δ
djangocms_frontend/contrib/link/cms_plugins.py	80.95% <ø> (+2.38%)	:arrow_up:
djangocms_frontend/common/background.py	54.54% <83.33%> (+25.97%)	:arrow_up:
djangocms_frontend/common/responsive.py	54.54% <83.33%> (+25.97%)	:arrow_up:
djangocms_frontend/common/sizing.py	54.54% <83.33%> (+25.97%)	:arrow_up:
djangocms_frontend/contrib/grid/forms.py	90.90% <100.00%> (ø)
djangocms_frontend/contrib/link/forms.py	82.51% <0.00%> (+5.59%)	:arrow_up:

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[lgtm-com[bot]]

This pull request fixes 1 alert when merging d800005a8c79dde3695a06c4f817d477da459365 into 00220e0fe605ca41f04cf3b4195eb35ab190e669 - view on LGTM.com

fixed alerts:

• 1 for Unused import

[lgtm-com[bot]]

This pull request fixes 7 alerts when merging a96c542cdafe80b9844cafb1b5fc39f34d3406a6 into 00220e0fe605ca41f04cf3b4195eb35ab190e669 - view on LGTM.com

fixed alerts:

• 4 for Unused import
• 2 for Unused variable, import, function or class
• 1 for Template syntax in string literal

[lgtm-com[bot]]

This pull request fixes 7 alerts when merging 00294e2100a7c32df021259129fe593d8da9127f into a03e04d8222ce5f11176019edf0cf16e9b305b40 - view on LGTM.com

fixed alerts:

• 4 for Unused import
• 2 for Unused variable, import, function or class
• 1 for Template syntax in string literal

[lgtm-com[bot]]

This pull request fixes 7 alerts when merging 7dba0d52c2a8f9c6476a3cc7f1dc7fe40ebf3afd into a03e04d8222ce5f11176019edf0cf16e9b305b40 - view on LGTM.com

fixed alerts:

• 4 for Unused import
• 2 for Unused variable, import, function or class
• 1 for Template syntax in string literal

[lgtm-com[bot]]

This pull request fixes 7 alerts when merging d1103a4fa57d5d2ef888c54a1410ed9c9d12ce26 into a03e04d8222ce5f11176019edf0cf16e9b305b40 - view on LGTM.com

fixed alerts:

• 4 for Unused import
• 2 for Unused variable, import, function or class
• 1 for Template syntax in string literal

[lgtm-com[bot]]

This pull request fixes 7 alerts when merging 3877f16a3a0082295c41510e0a4d0dbe77df6b5f into a03e04d8222ce5f11176019edf0cf16e9b305b40 - view on LGTM.com

fixed alerts:

• 4 for Unused import
• 2 for Unused variable, import, function or class
• 1 for Template syntax in string literal

[lgtm-com[bot]]

This pull request fixes 7 alerts when merging b1528f3212ef74feb5dbd675caee5a0d30ec8c4b into a03e04d8222ce5f11176019edf0cf16e9b305b40 - view on LGTM.com

fixed alerts:

• 4 for Unused import
• 2 for Unused variable, import, function or class
• 1 for Template syntax in string literal

[lgtm-com[bot]]

This pull request fixes 6 alerts when merging 6a1db04fd8c8c4c8a97339b5ccaa46b0f3eb596e into a03e04d8222ce5f11176019edf0cf16e9b305b40 - view on LGTM.com

fixed alerts:

• 3 for Unused import
• 2 for Unused variable, import, function or class
• 1 for Template syntax in string literal

[marksweb]

Looking good @fsbraun

Is that background stuff related to background images that we talked about recently?

Reading a doc string in this made me think it'd be good to type hint this.

I've also got a script that can compile the many requirements files for testing and include the hashes for each package using pip-tools. That may be something to look at to ease maintainence

[fsbraun]

Thanks, @marksweb ! I'm afraid that the background stuff is just tiding up the code. I will update your PR with the background image fixes for the docs.

For django CMS we're very far away from type hinting. I've not started experimenting with it yet. The biggest benefit seems to me that it documents expected types. PyCharm so far only confuses me if I have type hints in a project. Probably it guesses incorrectly.