update sponsors link and contacts, fixes #11
remove duplicate frontmatter
add new proposals
remove identifying info
Merge pull request #1126 from jbraeuer/master

Berlin 2014: +1 proposal
Chicago 2014: Enable registration
Merge branch 'master' of github.com:jedi4ever/devopsdays-webby
Merge branch 'master' of github.com:DevOpsDaysChicago/devopsdays-webby
Merge pull request #1127 from DevOpsDaysChicago/master

Chicago 2014: Add registration page and proposals
Add new Gold Partner: e-Xim IT.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
Merge pull request #1128 from kwilczynski/master

Add new Gold Partner: e-Xim IT.
Chicago 2014: Add Opinion Lab as Bronze sponsor
Merge pull request #1129 from DevOpsDaysChicago/master

Chicago 2014: Add Opinion Lab as Bronze sponsor
[belgium-2014] add CA as gold sponsor
[belgium-2014] cegeka silver sponsor
[belgium-2014] change link for ca.com
Fix registration page
Add more sponsors for TLV
Add more sponsors for TLV
Tel Aviv: fix sponsors text