Fix localization keys.

Author: Piotr Siatka

src/controls/filePicker/FilePicker.tsx

@@ -133,7 +133,7 @@ export class FilePicker extends React.Component<IFilePickerProps, IFilePickerSta
               <SiteFilePickerTab
                 breadcrumbFirstNode={{
                   isCurrentItem: true,
-                  text: "Images and files provided by your organization",
+                  text: strings.OrgAssetsTabLabel,
                   key: "keyOrgAssets"
                 }}
                 fileBrowserService={this.orgAssetsService}

src/loc/en-us.ts

@@ -284,6 +284,7 @@ define([], () => {
     OneDriveRootFolderName: "Files",
     OpenButtonLabel: "Open",
     PhotoIconUrl: "https://spoprod-a.akamaihd.net/files/odsp-next-prod_2019-01-11_20190116.001/odsp-media/images/itemtypes/20_2x/photo.png",
+    OrgAssetsTabLabel: "Images and files provided by your organization",
     PoweredByBing: "Powered by Bing",
     RecentDocumentsHeader: "Recent documents",
     RecentImagesHeader: "Recent images",

src/loc/mystrings.d.ts

@@ -258,6 +258,7 @@ declare interface IControlStrings {
   OneDriveRootFolderName: string;
   OpenButtonLabel: string;
   PhotoIconUrl: string;
+  OrgAssetsTabLabel: string;
   PoweredByBing: string;
   RecentDocumentsHeader: string;
   RecentImagesHeader: string;