Norwegian Bokmål (Element Android) - en to nb translation catalogue (4 entries)

[ctx: title.txt:1]
note: The app store title, there's a 30 character limit
en: Element - Secure Messenger
nb: Element - Sikker Meldingsapp

[ctx: short_description.txt:1]
en: Group messenger - encrypted messaging, group chat and video calls
nb: Gruppe-meldingsapp - krypterte meldinger, gruppechat og videosamtaler

[ctx: changelogs/40101010.txt:1]
en: Main changes in this version: performance improvement and bug fixes!
    Full changelog: https://github.com/element-hq/element-android/releases/tag/v1.1.1
nb: Hovedendringene i denne versjonen: Forbedringer i ytelse og bugfikser!
    Full endringslogg: https://github.com/element-hq/element-android/releases/tag/v1.1.1

[ctx: changelogs/40100170.txt:1]
en: Main changes in this version: Bug fixes!
    Full changelog: https://github.com/element-hq/element-android/releases/tag/v1.0.17
nb: Hovedendringene i denne versjonen: Bugfikser!
    Full endringslogg: https://github.com/element-hq/element-android/releases/tag/v1.0.17
