D8863: Give warnings when the file is modified externally

[Albert Astals Cid]

aacid added inline comments.

INLINE COMMENTS

> ngraham wrote in part.cpp:1720
> With "Keep Okular version", could we make it save over the file again using the copy in memory--including the current state of the user's annotations and forms?
> 
> If not, then how about this?
> 
> "There are unsaved changes, but the file has been modified by another program since it was opened and cannot be saved. Reloading will display the modified version of the file without any of your changes."

There's no such thing as "the copy in memory" (at least for PDF that is really what matters at this stage)

"modified" is not clear if it's the old or new version, something like "new version" makes more sense

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D8863

To: aacid
Cc: ngraham, rkflx, ltoscano, #okular, aacid
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