fix: Allow for static ace editor files (through djangocms-static-ace)

[fsbraun]

Description

This PR does

• Update the ace editor used to the (currently) latest version 1.9.6
• Loads the ace editor files not from cdn but from static files if djangocms_static_ace is installed

This fixes the corresponding bug mentioned here https://github.com/django-cms/djangocms-frontend/issues/48

Related resources

Checklist

• [x] I have opened this pull request against master
• [ ] I have added or modified the tests when changing logic (n/a)
• [x] I have followed the conventional commits guidelines to add meaningful information into the changelog
• [x] I have read the contribution guidelines and I have joined #workgroup-pr-review on Slack to find a “pr review buddy” who is going to review my pull request.

[codecov[bot]]

Codecov Report

Merging #49 (308ee79) into master (b46bde5) will increase coverage by 5.00%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #49      +/-   ##
==========================================
+ Coverage   81.60%   86.60%   +5.00%     
==========================================
  Files         128      110      -18     
  Lines        3974     2920    -1054     
  Branches      799      565     -234     
==========================================
- Hits         3243     2529     -714     
+ Misses        602      294     -308     
+ Partials      129       97      -32     

Impacted Files	Coverage Δ
djangocms_frontend/contrib/image/cms_plugins.py	92.30% <ø> (ø)
djangocms_frontend/contrib/content/forms.py	100.00% <100.00%> (ø)
djangocms_frontend/helpers.py	86.95% <0.00%> (-5.80%)	:arrow_down:
djangocms_frontend/contrib/link/forms.py	76.92% <0.00%> (-5.60%)	:arrow_down:
djangocms_frontend/fields.py	81.74% <0.00%> (-3.97%)	:arrow_down:
djangocms_frontend/settings.py	92.85% <0.00%> (-3.58%)	:arrow_down:
djangocms_frontend/models.py	81.96% <0.00%> (-3.28%)	:arrow_down:
djangocms_frontend/contrib/link/cms_plugins.py	78.57% <0.00%> (-2.39%)	:arrow_down:

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[lgtm-com[bot]]

This pull request fixes 8 alerts when merging f71f53ab2e3f8c1b11b86bd24e28692b5619bdc4 into b46bde56b10e365629983525cdfa7508fec0cb8c - view on LGTM.com

fixed alerts:

• 4 for Unused import
• 2 for Missing call to `__init__` during object initialization
• 1 for Conflicting attributes in base classes
• 1 for First argument to super() is not enclosing class

[lgtm-com[bot]]

This pull request introduces 2 alerts and fixes 8 when merging 308ee7907360448d237f47331d7a340be4cac76a into b46bde56b10e365629983525cdfa7508fec0cb8c - view on LGTM.com

new alerts:

• 2 for Missing call to `__init__` during object initialization

fixed alerts:

• 4 for Unused import
• 2 for Missing call to `__init__` during object initialization
• 1 for Conflicting attributes in base classes
• 1 for First argument to super() is not enclosing class