They are cached in AudioRtpFactory, but may be replaced in
AudioSrtpSession. Therefore, whenever we reinitialize these contexts
we must update the cached values in audiortpfactory. In addition, since
they will outlive a given AudioSrtpSession, they must NOT be deleted in
AudioSrtpSession's destructor but rather in AudioRtpFactory's.

Also added whitespace checking pre-commit hook when autogen.sh is called.

99 % of these are just whitespace changes. Some unnecessary includes
removed as well

gnome-client still has leftover icon that crashes when clicked on.

try to make it more readable/understandable