Merge branch 'master' into 'master'

Adding the possibility to call admin.php from CLI to automatize (e.g. in cron) the cleaning of old/expired files and unfinished tranfers

Hello,
I think this feature might be of interest for other administrators of Jirafeau. I have not found any way in the app to do it so I developed this small patch. What do you think?
Best
Pierre-Alain

See merge request !15