Summary: Мрія adds "Домашні завдання" feature

Why It Matters: This change adds a new feature for teachers.

What Changed:

• The "Журнал" feature for teachers was removed.
• A new feature called "Домашні завдання" was added for teachers. This lets teachers set homework with descriptions, files, and links.
• The "План дня" feature for children was removed.
• A new feature called "Результати навчання" was added for children. This lets them track their progress.
• The "Розклад, оцінки, завдання" feature for parents was removed.
• A new feature called "Результати навчання" was added for parents. This lets them see their child's learning progress.
• Instagram post dates were updated.