v1.10.4

Increase version to v1.10.4

## Changes
- Use blue icons as favicons for better contrast (#235)
- Fix pairdrop-cli exit on error
- Enhancement: On release: Prevent nesting of pairdrop-cli folder inside pairdrop-cli.zip
- Enhance documentation for pairdrop-cli and sending from context menu (#236)
- Translations update from Hosted Weblate