Update partner logo. Company has merged/changed.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
We are no longer accepting talk proposals.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Merge pull request #1109 from kwilczynski/master

Updates to Warsaw 2014.