0.20.8

• Public trek export : Fix various layout regressions (ref #848)
• Public trek export : Show POI theme pictogram (fixes #858)
• Public trek export : full width for information desk frame (fixes #856)
• Public trek export : add footer with trek title and page numbers (fixes #861)
• Public trek export : add floating picture in POI detail (fixes #860)
• Public trek export : fix POI thumbnails missing (fixes #869)
• Fix point offset lost on path update (fixes #867)
• Fix reconnect point topologies with offset to closest path (fixes #868)