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Add Arabic language to webpanel

Web panel

This reverts commit d21bcba550.

Changed JPG to PNG, invert nighttime Meteor M2 images and fixed timezone issues

I've changed the last line which saves the image from JPG format to PNG in order to be compatible with receive_meteor.sh script. I've also changed satellite height to 830 km since according to https://www.n2yo.com/satellite/?s=40069 perigee is 826.8 km, and apogee is 833.6 km as of 14 October 2020.

I've experienced issue when I put in +2 timezone, the script calculates sun elevation for -2 timezone so i changed plus to minus in time.localtime function. Also added support for Daylight saving time.

I've added elevation on text overlay, changed all images from JPG to PNG in order to preserve whole resolution and added code to remove map image for overlay.

I've added piece of code to invert Meteor M2 images from nighttime pases (APID68 from IR sensor) so that clouds appear white and not black, text overlay (satellite name, timestamp and elevation) on Meteor M2 images like NOAA have, and deleting all intermediate images.

This reverts commit 197a848cda.

(cherry picked from commit 72f43265b5)
Signed-off-by: Nico Rey <rey.nico@gmail.com>