[dolphin] Add text/plain mime data with urls in PrettyDecoded string format
Review Request #129094 - Created Oct. 4, 2016 and discarded
Use case: copy file in Dolphin and paste its URL in Firefox
Some applications (such as QtCreator) are smart enough to use text/uri-list value, but, sadly, other applications (such as Firefox) accepts only text/plain
Now Ctrl+C on a file in Dolphin and Ctrl+V in the address line in Firefox works as expected.