added icons in object nav
Export sections shows existing control mappings, fixed systems import, other minor fixes
Merge pull request #140 from reciprocity/feature/object-nav-icons

added icons in object nav
Merge pull request #141 from reciprocity/feature/export_show_links

Export shows links (sections), fixes sys import, other bug stability fixes
Merge remote-tracking branch 'origin/develop' into feature/map-the-things