Possibility for administrator to link images to content pages

It should be possible for administrators to link images to the content pages or any other content sections on the site (e.g. process descriptions). I think it would be necessary for this feature to also have some way of managing content files and folders within the system. Adding and attaching these files to the content sections should be as easy as possible, not requiring to fill names and descriptions in 5 different languages. Just drag+drop the file to the content editor and it appears there. If you want, you should be able to edit its details later on.