removed 'readonly' from resourse URL, "ZIP"

+ confusing to have a "no" mouseover pointer when hovering the output URL links, esp if Flash is disabled (FlashBlock, mobile)
  + suggestion: I kinda like the gray background for the file-listing output, but I'm wondering if a gray-background outer div, with the inner `<input>` output with a white-ish background would look more polished?
+ tooltip of "Download" now "Download ZIP archive"; confusing if downloading just the `mainfile`
  + suggestion: change that download icon to a ZIP icon?  Better if you can squeeze an download icon on top, but don't worry about that too much.

cheers