fix for startup error + added fixes on mapsforge stuff rendering interuptiondone by @ssppgit
Revert "fix for startup error + added fixes on mapsforge stuff rendering interuptiondone by @ssppgit"

This reverts commit 12b4f883797babb1821306f7324cae5e99edf7c3.
Merge branch 'nf_single_file_project' of https://github.com/geopaparazzi/geopaparazzi into nf_single_file_project
cleanup + open project file with geopap from file browser