docs: Add and improve docstrings in meethub.events.views

The views in meethub/events/views.py could use more descriptive docstrings. Good docstrings help new contributors understand the code faster. Let's go through the file and ensure every class and method has a clear, helpful docstring.

Acceptance Criteria:

1. All views and methods in meethub/events/views.py have PEP 257 compliant docstrings.
2. The docstrings clearly explain what each view does, what context it provides, and what template it uses.