Merge branch 'bugfixes' into develop

configure.ac

data/org.zrythm.gschema.xml

inc/settings/settings.h

po/de/zrythm.po

po/es/zrythm.po

po/fr/zrythm.po

po/it/zrythm.po

po/ja/zrythm.po

po/zrythm.pot

resources/gen-gtk-gresources-xml.py

resources/ui/bot_dock_edge.ui

resources/ui/export_dialog.ui

resources/ui/first_run_assistant.ui

resources/ui/project_assistant.ui

src/actions/actions.c

src/audio/channel.c

src/audio/mixer.c

src/audio/region.c

src/audio/track.c

src/audio/tracklist.c