maps documentation, refactoring of unused params etc, unique map container ids
doc minor
fix #3226 fixing broken Google map layers
fix #6110 using the same request protocol for the map service
#5883 fixing map baselayer config for the dafault case
#5729 fixed
fixing problems in openlayers maps with userdefined bbox and projections
#5683 implemented loading animation for open layers map viewer
preview map in geo setting resizable to find desired aspect ratio and with height
further improvements in the geo settings ui and preparation for hybrid map preview
harmonizing and simplifying the map settings
validation of map aspect ratio and documentation improvements
#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