Is your feature request related to a problem? Please describe.
Convert CoreReaderFragment to Kotlin.
Splits from #1826

Custom css themes shouldn't be too difficult. Probably pass in a url parameter for the them you want and then handle it in the template. Night mode has been requested.

The wikipedia api provides a section an id (1 upwards), it'd be nice if that would also be included.

Example: https://en.wikipedia.org/w/api.php?format=xml&action=parse&prop=sections&page=License

Use new presets

Steps:

• download zim file via browser
• open download folder
• click on ZIM file and choose to open with Kiwix

I get:

• Kiwix started, but ZIM file welcome page not displayed and ZIM file not in local library

Firstly, thank the authors for providing this soft. Here I want to report a bug.

Affected Version: from 2.0 to the latest version 2.0.5. (2.0-rc4 doesn't have this bug.)
OS: Win 8.1 x64

Steps to reproduce the bug:

1. Store .zim file on an external hard drive (2TB).
2. Plug in the drive before launching kiwix.
3. Launch kiwix-desktop.exe.
4. About 90% of possibi