[Views] Improve view list / detail in admin

[bruhnild]

List :

• [ ] Add search bar
• [ ] Constraint icons size to reduce the size of the lines
  • max width/height
  • border
  • transparent background
• [ ] Drop edit button in list (edition is done by click on row)
• [ ] Add a Ranking field to sort and see in which order views are display in front-ed (ranking must display views by numeric order)

Detail / edit :

• [ ] Add a activate/de activate option
• [ ] Add a bounding box text field and be able to copy/paste it
• [ ] Add a default basemap option for the bounding box
  • define in config and not a default mapbox basemap
• [ ] Add a default basemap and not a list of basemaps