fix #3226 fixing broken Google map layers
using new hostname geo.cybertaxonomy.org for mapproxy
#5023 adding otopo1 via edit proxy to the list of available layers
#5023 adding vmap0 via edit proxy to the list of available layers
updating layer data for the 'ETOPO1 Global Relief Model'
#5385 openlayers maps adapt to parent DOM element width and the map aspect ratio can be set instead of fixed width and height
moving content of folder 7.x up to the repository root