Fixed two issues:

- group shapes were not animated
- when smil:dur=indefinite final state of shapes was not frozen

Now when an audio or command node is hit a log message is printed
informing that such a type of animation nodes are not implemented.

Change-Id: I81853c982e6a2b68c3644b2ebc09e2d565d706af
Reviewed-on: https://gerrit.libreoffice.org/21446Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Marco Cecchetti <mrcekets@gmail.com>