Pachli 2.13.0

New features:

- Parse Instants from servers that don't include the timezone
- Replace Local timeline with Trending in default tabs
- Make media descriptions more important when composing

Fixes:

- Improve colours on buttons when composing
- Display poll previews correctly
- Don't crash if ComposeActivity is destroyed while taking a picture
- Start-align "Vote" button's position

Translations:

- Chinese, Finnish, Irish, Italian, Kabyle, Latvian, Polish, Slovak, Spanish
