thumbnailer: strip EXIF data from images

main: update footer, add webring/lieu icons; thumbnailer: skip zips too, update printed messages

mangle html for thumbnails in euereka instead of the shellscript -- wayyy faster

tweak thumbnailer to not modify gifs and give good feedback

add thumbnailer

add hyperlink templating and rename some functions

add new templating functions

add my .clang-format

initial commit - slight modifications from 100r.co generator