Update CSSconf EU 2017 data (#108)
Update CSSconf EU 2017 data (#108)

added date for CfP, links to accessibility statement, diversity tickets, correct spelling of name
mhorvvitz/codeandtalk.com,shaylavi/codeandtalk.com,rollandf/codeandtalk.com,szabgab/codeandtalk.com,mhorvvitz/codeandtalk.com,szabgab/codeandtalk.com,rollandf/codeandtalk.com,shaylavi/codeandtalk.com,szabgab/codeandtalk.com,shaylavi/codeandtalk.com,rollandf/codeandtalk.com,mhorvvitz/codeandtalk.com,rollandf/codeandtalk.com,szabgab/codeandtalk.com