Merge pull request #1256 from jbraeuer/master

Berlin 2014: More program.
[belgium 2014] add rackspace sponsor
more sponsors for Belgium
[belgium 2014] Axelos as sponsor
Gold sponsorship package is sold out now and replaced by Pearl package
Merge pull request #1257 from Tolomaus/master

Gold sponsorship package is sold out now and replaced by Pearl package
Add new Gold Partner - Sematext.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Merge pull request #1258 from kwilczynski/master

Add new Gold Partner - Sematext.
[warsaw 2014] changes in program and proposals sections
vargant configuration files for virtual dev machine
Merge pull request #1259 from rturowicz/master

Changes for Warsaw 2014 event
Add details about accommodations, etc.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Merge pull request #1260 from kwilczynski/master

Add details about accommodations, etc.
Add Michael Ducy from Chef.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Merge pull request #1261 from kwilczynski/master

Add Michael Ducy from Chef.
Small fix.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Merge pull request #1262 from kwilczynski/master

Small fix.
[warsaw-2014] update program and speakers info
Merge pull request #1263 from liku/master

[warsaw-2014] update program and speakers info
[warsaw-2014] update program and proposals page