Fixes & changes
- Fixed docker container timezone to match host timezone
- It is now possible to select multiple distribution and section when creating a new deb repo
- It is now possible to select multiple release version when creating a new rpm repo
- Added a predefined list of distributions and sections when creating a new deb repo (Debian & Ubuntu for now, maybe more later)
- Added a predefined list of release versions when creating a new rpm repo
- Added a progression counter on the signing packages operation (rpm)
- Updated mail template