Test on all supported browsers and both in Boost and Classic. Testing Instructions for "Create folder" Go into any course, turn editing on, and add a 'File' resource. In the 'Select files' dialog, click the 'Create folder' icon (second from left) Click on "Cancel" button or ESC      Expected: The keyboard focus still on the create folder icon. In the 'Select files' dialog, click the 'Create folder' icon (second from left) Press Tab twice, type in a folder name e.g. 'test', and press Return to create the folder (the folder is created and the dialog disappears)       Expected: The keyboard focus still on the create folder icon. Press Tab again Expected: The focus should be sensible in "Select files" area. Testing Instructions for "Delete" icon Go into any course, turn editing on, and add a 'File' resource. In the 'Select files' dialog, upload two or more files Click on "Display folder with files details" (the second icon from the right) Click on "Delete" icon without select any file or folder Click on "OK" button or ESC Expected: The keyboard focus still on the "Delete" icon. Check on a file/folder to delete Click on "Delete" icon Click on "OK" or "Cancel" button or ESC Expected: The keyboard focus still on the "Delete" icon. In case have one file/or one folder which be deleted. Press Tab again Expected: The focus should be sensible in "Select files" area.