fix date on dashboard (#223)

Author: iberryful

src/dashboard-client/src/store.js

@@ -63,7 +63,6 @@ function findJob (build, jobId) {
 
 function toDate (s) {
     let a = s.split(/[^0-9]/)
-    a[1] = a[1] - 1
     let dateStr = a[0] + '-' + a[1] + '-' + a[2] + ' ' + a[3] + ':' + a[4] + 'Z'
 
     return new Date(dateStr)