Improve the blurs even more.

Use a true gaussian with mirrored edges to bring more details outside the frame
while still not decreasing the radius.
Look at the MP size of the panorama to consider it's inclusion.

Keep an average MP of the album and only include panoramas which are
effectively larger. This avoid cropped pictures (which have a weird ratio) to
be included as well.
Introduce the ability to skip the zip/download generation.
Improve the panorama inclusion logic when multiple cameras are being used.

When considering panoramas for inclusion, also try to look at the original EXIF
image size and disregard crops. When shooting with different cameras at
different resolutions some cropped pictures might still slip.