Documentation: steps to migrate to a new server

[zorroblue]

We will need to add more documentation in case of backup, especially the steps needed to be taken in case of a migration. The following steps are to be highlighted:

• Backup of static-volume (Currently, only the peqp/ folder.)
• DROP DATABASE metakgp_wiki_db; followed by CREATE_DATABASE metakgp_wiki_db in the mysql shell inside the mysql container; followed by ./scripts/restore-from-backup.sh. This ensures that any existing database is empty before restoring the latest backup.
• Steps to put the old wiki in Read Only mode
• Steps to be taken in the overall process

[thealphadollar]

@zorroblue @icyflame Any updates on this?