修复可能存在的问题

Author: Sunwuyuan

src/containers/library-item.jsx

@@ -139,7 +139,7 @@ class LibraryItem extends React.PureComponent {
     render () {
         const iconMd5 = this.curIconMd5();
         const iconURL = iconMd5 ?
-            `${process.env.ZEROCAT_ASSETS}/${iconMd5}` :
+            `${process.env.ZEROCAT_ASSETS}/${iconMd5.slice(0, 2)}/${iconMd5.slice(2, 4)}/${iconMd5}` :
             this.props.iconRawURL;
         return (
             <LibraryItemComponent

src/lib/storage.js

@@ -64,7 +64,7 @@ class Storage extends ScratchStorage {
             // assetId as part of the create URI. So, force the method to POST.
             // Then when storage finds this config to use for the "update", still POSTs
             method: 'post',
-            url: `${this.assetHost}/${asset.assetId}.${asset.dataFormat}`,
+            url: `${this.assetHost}/${asset.assetId.slice(0, 2)}/${asset.assetId.slice(2, 4)}/${asset.assetId}.${asset.dataFormat}`,
             withCredentials: true
         };
     }