BIS-753: Fixed broken download.

ui-admin/src/js/components/database/data-browser/DataBrowser.jsx

@@ -186,7 +186,9 @@ class DataBrowser extends React.Component {
       const link = document.createElement('a')
       link.href = window.URL.createObjectURL(blob)
       link.download = file.name
+      document.body.appendChild(link);
       link.click()
+      document.body.removeChild(link);
     }  finally {
       this.setState({ loading: false })
     }

ui-admin/src/js/components/database/data-browser/DataBrowserController.js

@@ -218,7 +218,7 @@ export default class DataBrowserController extends ComponentController {
 
     while (offset < file.size) {
       const blob = await this._download(file, offset)
-      dataArray.push(await new Uint8Array(blob.arrayBuffer()))
+      dataArray.push(await blob.arrayBuffer())
       offset += CHUNK_SIZE
     }