Fixes:

• Fixed updater loosing user installed plugins
• Fixed updater loosing statistics.db
• Fixed outdated function call in retryFailedComments, causing exception #281
• Fixed comment amount being a String(??), leading to incorrect retry amount in retryFailedComments

Changes:

• Reworded login "waiting for bot accounts to be populated" message to be more user friendly
• Improved docker build process
• Bot process in Docker image is now unprivileged
• Switched to using npm ci instead of npm install to avoid potential package version mismatch issues
• Docs: Switched instructions to use npm start script instead of running node start.js manually
• Updated dependencies
• Minor other changes