Use btn-dark everywhere. Closes BiscuIT-ng#94.

Closes BiscuIT-ng#94

See merge request Teckids/BiscuIT/BiscuIT-App-Untis!8

Currently translated at 78.6% (11 of 14 strings)

Translation: BiscuIT School Information System/BiscuIT-App-Untis
Translate-URL: https://translate.edugit.org/projects/biscuit-sis/biscuit-app-untis/de/

Seriously, Untis - XML is well-structured format with schema validation
and all this stuff, and you have no better idea than filling a free-form,
space-separated list with values containing values?

Currently translated at 100.0% (11 of 11 strings)

Translation: BiscuIT School Information System/BiscuIT-App-Untis
Translate-URL: https://translate.edugit.org/projects/biscuit-sis/biscuit-app-untis/de/

Use btn-secondary instead of btn-primary. Closes BiscuIT-ng#83.

Closes BiscuIT-ng#83

See merge request Teckids/BiscuIT/BiscuIT-App-Untis!7

Use bootstrap buttons. Advances BiscuIT-ng#81.

See merge request Teckids/BiscuIT/BiscuIT-App-Untis!6

Currently translated at 100.0% (10 of 10 strings)

Translation: BiscuIT School Information System/BiscuIT-App-Untis
Translate-URL: https://translate.edugit.org/projects/biscuit-sis/biscuit-app-untis/de/

Make page titles and headers consistent. Advances BiscuIT-ng#65.

See merge request Teckids/BiscuIT/BiscuIT-App-Untis!5

Currently translated at 100.0% (10 of 10 strings)

Translation: BiscuIT School Information System/BiscuIT-App-Untis
Translate-URL: https://translate.edugit.org/projects/biscuit-sis/biscuit-app-untis/de/

Move menu entries to DATA_MANAGEMENT_MENU. Advances BiscuIT-ng#61.

See merge request Teckids/BiscuIT/BiscuIT-App-Untis!4