@callemand: Weather - Change UI from date to day and add sentence into chat

[Pierre-Gilles]

Pull Request check-list

To ensure your Pull Request can be accepted as fast as possible, make sure to review and check all of these items:

• If your changes affects code, did your write the tests?
• Are tests passing? (npm test on both front/server)
• Is the linter passing? (npm run eslint on both front/server)
• Did you run prettier? (npm run prettier on both front/server)
• If you are adding a new features/services, did you run integration comparator? (npm run compare-translations on front)
• If your changes modify the API (REST or Node.js), did you modify the API documentation? (Documentation is based on comments in code)
• If you are adding a new features/services which needs explanation, did you modify the user documentation? See the GitHub repo and the website.
• Did you add fake requests data for the demo mode (front/src/config/demo.json) so that the demo website is working without a backend? (if needed) See https://demo.gladysassistant.com.

NOTE: these things are not required to open a PR and can be done afterwards / while the PR is open.

Description of change

Please provide a description of the change here. It's always best with screenshots, so don't hesitate to add some!

[codecov]

Codecov Report

Merging #1105 (bab2ea1) into master (dc25cf7) will increase coverage by 0.21%.
The diff coverage is 97.77%.

@@            Coverage Diff             @@
##           master    #1105      +/-   ##
==========================================
+ Coverage   95.59%   95.80%   +0.21%     
==========================================
  Files         532      533       +1     
  Lines        7189     7220      +31     
==========================================
+ Hits         6872     6917      +45     
+ Misses        317      303      -14     

Impacted Files	Coverage Δ
server/lib/weather/weather.command.js	88.88% <96.55%> (+74.60%)	⬆️
server/lib/brain/brain.getReply.js	100.00% <100.00%> (ø)
server/lib/brain/brain.train.js	100.00% <100.00%> (+4.16%)	⬆️
server/lib/brain/index.js	100.00% <100.00%> (ø)
server/lib/weather/index.js	100.00% <100.00%> (ø)
server/lib/weather/weather.error.js	100.00% <100.00%> (ø)
server/services/openweather/lib/formatResults.js	100.00% <100.00%> (ø)
server/utils/constants.js	100.00% <100.00%> (ø)

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