Description of problem:
A Declined meeting request still shows up in one's calendar, although accurately
showing one as declined.

Version-Release number of selected component (if applicable):
evolution-2.0.2-25

How reproducible:
Always.

Steps to Reproduce:
1. Set up a meeting on another machine with another user, and add your test user
from the contact list, sending a mail message about it to the test user.
2. As the test user, decline the meeting.
3. It'll be added to your calendar anyway, even though you show up as declined
in the added event.
  
Actual results:
Adding a declined meeting to one's calendar seems... wrong.

Expected results:
Don't add the meeting!

Additional info:
No idea if this is a regression or not. Nor if it happens on i386.