Add team rosters and course resource links

- List preliminary team compositions in projects/README.md,
  to be finalized on 18 September
- Add links to the seminar survey and lecture recordings in
  README.md
- Clarify individual and shared grading rules for joint
  presentations in seminars.md
- Note that the post-seminar survey no longer has a deadline

README.md

@@ -7,9 +7,10 @@
 - [Канал курса](https://t.me/+qHWHUT_ZYFU2M2My)
 - [Чат курса](https://t.me/+0Q-7K_sKtSQyN2Yy)
 - [Подключение к онлайн-занятию](https://my.mts-link.ru/j/19605137/24631961487)
+- [Опрос после семинара](https://forms.gle/3LBTN7XVSmoi6ZWo9)
+- [Записи занятий](https://disk.yandex.ru/d/x3AXXLrUyos8jA)
 - [Таблица с оценками](https://docs.google.com/spreadsheets/d/1nVFKTMwGGFAILe1tBmq-s6jR-gBRlu6d2vqffR70sfw/edit?usp=sharing)
 - [Сбор дополнительных тезисов](https://forms.gle/xpBhersGbtoNnUWy8)
-- Опрос после семинара
 
 ## Навигация