elinks: update to 0.19.0

elinks: update to 0.19.0

v0.19.0:
    print progress of curl http uploads
    do not load js scripts if ecmascript is disabled by disallow.txt or allow.txt

v0.19.0rc1:
    option document.browse.margin_auto #360 (hard margins)
    TERM=dumb for js tests. #361
    option document.html.compress_empty_lines #362
    css visiblity: hidden support
    experimental iframe support
    spartan protocol
    window.scroll in js
    inline images support in html documents (meson option kitty)
    and options document.html.kitty and document.html.sixel. Note that need
    also enable kitty or sixel in terminal options
    include-fragment support (now is easier to download something from github)
    experimental libuv support
    allow to set color0 to color255 as color
    toggle-ecmascript-keys action to toggle between Application or Browser mode
    requestAnimationFrame in js
    option ui.sessions.auto_save_position #392
    option document.html.display_unfinished
    meson options avif and webp
    option protocol.mailcap.allow_empty_referrer
    option ui.leds.redraw_interval
    fixes in DOS version related to temporary files creation
    length can be bigger than int in http protocol #396
    ignore result of verification for gemini protocol #397
    meson option win32-vt100-native for Windows 10 and newer
    support for chawan's extensions for mailcap (x-ansioutput and x-htmloutput)
    Polish translation update
    Serbian translation update
    elinks.get_option(name) and elinks.set_option(name, value) in Python scripting #406
    other small fixes

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>