Useful error message on http-status=413, when uploading application jar

[tajakobsen]

I had a problem where I couldn't upload a jar-file by dragging and dropping it in the browser in "Applications".

I was only getting the error message:

undefined
The application could not be installed

And nothing was written to the logs.

I spent a lot of time trying to figure out what was wrong with my Enonic setup, when the problem actually was that my Nginx reverse proxy had a too low client_max_body_size.

I think this is a pretty common mistake to make, and I think it would be very helpful if the "Applications" app, can show a usefull error message when it gets http status = 413 on uploads.

[rymsha]

This is app-applications task because XP backend won't have chance to write an error message