/osc/a/usage returns 500

[LiAh Sheep]

E, [2015-09-23T14:53:14.067787 #10182] ERROR -- : [ERROR] {:status=>:internal_server_error, :message=>"远端服务器出错", :internal_message=>"undefined method `expired?' for nil:NilClass", :options=>{}}

[Jimmy Chu]

Merged in liahsheep/cnpaas-portal (pull request #220)

fix: UsageDatum does not add new row when table is empty (fixing #269)

→ <<cset 2ea9ee4edea2>>