Follow-up after #1317

[szaimen]

• Also are you sure that using a different name or file extension will always work? What about cases where you are only allowed to edit the file but not save in the target directory?
• Is the list of tools on the left accessible?
• Edit would be nicer directly in the top right, outside of 3-dot menu. (Needs change in component, but would also be generally nice to have more actions outside of that 3-dot menu like download and "Open sidebar")
• Use dark theme
• Disable when mobile
• on a publlic page does the auto-generated path look a bit strange and the dropdown is missing some spacing on the left?
• some elements of the viewer overlap the sidebar when opening it on mobile server#33870
• some buttons and text in the viewer editor overlap/are out of bounds server#33869

cc @skjnldsv