qgis2web supports layer groups

Exporting layer groups

• both OpenLayers and Leaflet exports achieve layer groups (non-nested) exportability solves issue #155 #175 #351 #485 #641 #678 #738 #754 #756 #926 #935 #977 #989 #1001 #1016 #1029
• adapt the 'highlight on hover' and 'popup on hover' functionalities to work when layer groups are present solves issue #983 #1011

openlayers	leaflet

Revised "Layers and Groups' tab" design

• groups and layers' list is sorted as in QGIS (previously, layer groups were moved below individual layers) and layer groups contains layers
• "Popups" choice is positioned as the last item in the list options, becomes a drop-down menu, closes if check is not selected and disappears if there are no exportable popup fields solves issue #760
• "Popup fields" ' attributes are displayed in italics and are aligned in the same column as the parent (previously, they appeared in the last column and with long names, they were difficult to use because the window needed to be scrolled to the right) solves issue #440
• "visibility" and "popups" choices for groups are removed (currently unnecessary).

before	after

New layerswitcher for Leaflet

• Introduced a new layerswitcher for Leaflet export https://github.com/jjimenezshaw/Leaflet.Control.Layers.Tree?tab=readme-ov-file, thanks to @jjimenezshaw

For Linux User

• Excluded WIKI and Preview functionality for Linux users who are unable to install and use QtWebKit (So the plugin will launch and be usable without these features) solves issue #266 #309 #358 #474 #523 #625 #749 #1019

Minor changes

• openlayers export acquires by default declutter:false (at webmap load, all features will be visible and queryable, even if they are overlapping) solves issue #915 #919 #1032
• xyz openlayers layers do not acquire type:base by default (with only one basemap, it's possible to disable it to have a white background)
• fix export for text-field that contains more then 255 characters, thanks to @anonymous378 solves issue #947
• Fix highlighting of multi-point and multi-line geometries for both OpenLayers and Leaflet solves issue #589
• Fix Leaflet error for mouse out of cluster: "e.target._eventParents[i].resetStyle is not a function" solves issue #510

WIKI

• Modified WIKI graphics for better readability (navigation menù at the top)
• Update WIKI section