Updated rack to 1.4.5
Updated rack to 1.4.5

Protects agains potential timing attacks from CVE-2013-0263

CjayBillones/codetriage,ven0226/codetriage,VishvajitP/codetriage,VishvajitP/codetriage,ferdinandrosario/codetriage,ojengwa/codewarrior,rvasqz86/codetriage,cheerfulstoic/codetriage,igas/codetriage,codetriage/codetriage,sharpstone/rails3-hatchet-dev,hone/codetriage,emilyforst/codetriage,hone/codetriage,maclover7/codetriage,CjayBillones/codetriage,emilyforst/codetriage,ferdinandrosario/codetriage,VishvajitP/codetriage,avirajkhare00/codetriage,hone/codetriage,ojengwa/codewarrior,igas/codetriage,rvasqz86/codetriage,ven0226/codetriage,ferdinandrosario/codetriage,ck3g/codetriage,ven0226/codetriage,colinrubbert/codetriage,sharpstone/rails3-hatchet-dev,ngpestelos/codetriage,CjayBillones/codetriage,cheerfulstoic/codetriage,ngpestelos/codetriage,maclover7/codetriage,rvasqz86/codetriage,colinrubbert/codetriage,codetriage/codetriage,ck3g/codetriage,ngpestelos/codetriage,cheerfulstoic/codetriage,schneems/codetriage-ko1-test-app,igas/codetriage,schneems/codetriage-ko1-test-app,avirajkhare00/codetriage,codetriage/codetriage,ojengwa/codewarrior,emilyforst/codetriage,maclover7/codetriage,avirajkhare00/codetriage,colinrubbert/codetriage