Updated to latest YNH helpers and other fixes

[anmol26s]

Problem

• App did not used latest YNH helpers Create the script according to the YunoHost 3 helpers #8.
• Blank page on latest updated version Blank page after fresh install #9.
• Backup and restore not working Can't restore #7.
• App did not installed inside the /home directory for its data folder Dedicated user for app and data folder should be in /home/yunohost.app/.zeronet #6.

Solution

• Updated to latest YNH helpers
• Temporary removed the app from SSO till this gets fixed Prevent Nginx from overwriting CSP headers of proxy YunoHost/issues#1580.
• Fixed backup and restore script
• Added data folder to /home/yunohost.app/$app/data

PR Status

• Code finished.
• Tested with Package_check.
• Fix or enhancement tested.
• Upgrade from last version tested.
• Can be reviewed and tested.

Package_check results

[anmol26s]

Can someone put the CI test.

[anmol26s]

!testme

[yunohost-bot]

✌️

[anmol26s]

!testme

[yunohost-bot]

🎠