Version 4.2.3:
* New checks about :
* duplicated keys in the legend
* French IGN map provider
* Fix loading the "default-background-color" in the legend
* Fix link to online documentation about "Actions"
* Add project loading time in the CFG file for testing purpose only
* Some UX issues
* Remove some code in backend
Version 4.2.2:
* Fix a Python error when logging
Version 4.2.1:
* New option to Add checkbox to choose single WMS layer loading, contribution
from @ghtmtt
* Fix loading the Dataviz HTML template from a configuration file
* Do not make the "Overview" group mutually exclusive
* Avoid a Python error if the maximum scale is too big
* Fixing some signals about the Lizmap Web Client version
* Check project CRS if the projection has inverted axes and 3.7.0 <= LWC <=
3.7.3
