Multiple fixes and improvements from a lot of events

[proditis]

• Add support for proxmox API URLs for start/stop/rollback operations #1246
• Allow SmartCity to become disabled #1214
• Rename backend monthly_leaderboards to player_monthly_rankings  #1210
• Makes sure that the pm2 service starts after docker so that we dont have to manually restart
• Hooks pre_backups operations on backup playbook
• Update reboot playbook to use env based ansible-playbook command
• Adds better handling for removal of existing docker networks
• Add support for sysconfig player approvals to backend player/mail command
• Add support for docker names on backend player/register when usernames are not provided
• Add new command backend player/regenerate-certs for generating new player SSL certificates
• Add dockernames generation to Produce component
• Add missing help backend/modules/content/views/default/help/writeup-rules.php
• Display mailer errors on backend when we try to mail players
• Make backend player listing respect sysconfig settings for affiliation field
• Add support to Target for pve (proxmox) operations
• On target listing make sure the server is truncated so that it doesnt make the table huge
• Introduce database backup script
• Better handling for multiple dumps on init.sh
• Introduce multi-ports.py network visuals helper for when we have multiple VPN hosts
• Remove hardcoded MaterialAsset dependencies from our widgets and views
• Remove a die(dump()) from SiteController.php
• Improve academic_grouping support on frontend
• Add support for sysconfig registration settings on Resend verification code
• Add support for translation to player experience level
• Introduce countdowns when event start/end is defined