Do not remove messages everywhere

https://github.com/makinacorpus/Geotrek/issues/1225
Cleaner paperclip integration
Upgrade chosen
Use last version of paperclip
Merge remote-tracking branch 'origin/upgrade_chosen' into develop
Show action message in history
Merge remote-tracking branch 'origin/fix_messages_disappearing' into develop
Merge remote-tracking branch 'origin/edit_attachments' into develop
Merge remote-tracking branch 'origin/change_action_table' into develop
Merge branch 'develop'
Preparing release 1.9.0
Back to development: 1.9.1