v0.14.0

Likely the last release before v1.0.0.

- Startup: refreshed initialization screen; full download is optional (can be skipped) and remains available later in settings.
- More reliable NATINF search: automatically falls back to the offline index if the API fails.
- Glossary: alphabetical index bar for quick jumps and new entries added.
- Favorites and data: clearer empty-folder hint, fixed categories, and network calls forced to HTTPS.
- Performance: simplified and refactored NATINF search/parsing for faster results.
- Sources: custom URLs restricted to allowed datasets and a hardened built-in registry.
- Data: readable names and license info for each dataset in the registry.
