refactor favicon.html

[WolfgangFahl]

continue #479 and as part of #519 get rid of

    <script>
    // Reload page if reached via back button (history in general)
    // @TODO - deprecated see https://stackoverflow.com/questions/58652880/what-is-the-replacement-for-performance-navigation-type-in-angular
    if(performance.navigation.type == 2){
      location.reload(true);
    }
    // ScrollIntoView polyfill https://www.npmjs.com/package/smoothscroll-polyfill
    !function(){"use strict";function o(){var o=window,t=document;if(!("scrollBehavior"in t.documentElement.style&&!0!==o.__forceSmoothScrollPolyfill__)){var l,e=o.HTMLElement||o.Element,r=468,i={scroll:o.scroll||o.scrollTo,scrollBy:o.scrollBy,elementScroll:e.prototype.scroll||n,scrollIntoView:e.prototype.scrollIntoView},s=o.performance&&o.performance.now?o.performance.now.bind(o.performance):Date.now,c=(l=o.navigator.userAgent,new RegExp(["MSIE ","Trident/","Edge/"].join("|")).test(l)?1:0);o.scroll=o.scrollTo=function(){void 0!==arguments[0]&&(!0!==f(arguments[0])?h.call(o,t.body,void 0!==arguments[0].left?~~arguments[0].left:o.scrollX||o.pageXOffset,void 0!==arguments[0].top?~~arguments[0].top:o.scrollY||o.pageYOffset):i.scroll.call(o,void 0!==arguments[0].left?arguments[0].left:"object"!=typeof arguments[0]?arguments[0]:o.scrollX||o.pageXOffset,void 0!==arguments[0].top?arguments[0].top:void 0!==arguments[1]?arguments[1]:o.scrollY||o.pageYOffset))},o.scrollBy=function(){void 0!==arguments[0]&&(f(arguments[0])?i.scrollBy.call(o,void 0!==arguments[0].left?arguments[0].left:"object"!=typeof arguments[0]?arguments[0]:0,void 0!==arguments[0].top?arguments[0].top:void 0!==arguments[1]?arguments[1]:0):h.call(o,t.body,~~arguments[0].left+(o.scrollX||o.pageXOffset),~~arguments[0].top+(o.scrollY||o.pageYOffset)))},e.prototype.scroll=e.prototype.scrollTo=function(){if(void 0!==arguments[0])if(!0!==f(arguments[0])){var o=arguments[0].left,t=arguments[0].top;h.call(this,this,void 0===o?this.scrollLeft:~~o,void 0===t?this.scrollTop:~~t)}else{if("number"==typeof arguments[0]&&void 0===arguments[1])throw new SyntaxError("Value could not be converted");i.elementScroll.call(this,void 0!==arguments[0].left?~~arguments[0].left:"object"!=typeof arguments[0]?~~arguments[0]:this.scrollLeft,void 0!==arguments[0].top?~~arguments[0].top:void 0!==arguments[1]?~~arguments[1]:this.scrollTop)}},e.prototype.scrollBy=function(){void 0!==arguments[0]&&(!0!==f(arguments[0])?this.scroll({left:~~arguments[0].left+this.scrollLeft,top:~~arguments[0].top+this.scrollTop,behavior:arguments[0].behavior}):i.elementScroll.call(this,void 0!==arguments[0].left?~~arguments[0].left+this.scrollLeft:~~arguments[0]+this.scrollLeft,void 0!==arguments[0].top?~~arguments[0].top+this.scrollTop:~~arguments[1]+this.scrollTop))},e.prototype.scrollIntoView=function(){if(!0!==f(arguments[0])){var l=function(o){for(;o!==t.body&&!1===(e=p(l=o,"Y")&&a(l,"Y"),r=p(l,"X")&&a(l,"X"),e||r);)o=o.parentNode||o.host;var l,e,r;return o}(this),e=l.getBoundingClientRect(),r=this.getBoundingClientRect();l!==t.body?(h.call(this,l,l.scrollLeft+r.left-e.left,l.scrollTop+r.top-e.top),"fixed"!==o.getComputedStyle(l).position&&o.scrollBy({left:e.left,top:e.top,behavior:"smooth"})):o.scrollBy({left:r.left,top:r.top,behavior:"smooth"})}else i.scrollIntoView.call(this,void 0===arguments[0]||arguments[0])}}function n(o,t){this.scrollLeft=o,this.scrollTop=t}function f(o){if(null===o||"object"!=typeof o||void 0===o.behavior||"auto"===o.behavior||"instant"===o.behavior)return!0;if("object"==typeof o&&"smooth"===o.behavior)return!1;throw new TypeError("behavior member of ScrollOptions "+o.behavior+" is not a valid value for enumeration ScrollBehavior.")}function p(o,t){return"Y"===t?o.clientHeight+c<o.scrollHeight:"X"===t?o.clientWidth+c<o.scrollWidth:void 0}function a(t,l){var e=o.getComputedStyle(t,null)["overflow"+l];return"auto"===e||"scroll"===e}function d(t){var l,e,i,c,n=(s()-t.startTime)/r;c=n=n>1?1:n,l=.5*(1-Math.cos(Math.PI*c)),e=t.startX+(t.x-t.startX)*l,i=t.startY+(t.y-t.startY)*l,t.method.call(t.scrollable,e,i),e===t.x&&i===t.y||o.requestAnimationFrame(d.bind(o,t))}function h(l,e,r){var c,f,p,a,h=s();l===t.body?(c=o,f=o.scrollX||o.pageXOffset,p=o.scrollY||o.pageYOffset,a=i.scroll):(c=l,f=l.scrollLeft,p=l.scrollTop,a=n),d({scrollable:c,method:a,startTime:h,startX:f,startY:p,x:e,y:r})}}"object"==typeof exports&&"undefined"!=typeof module?module.exports={polyfill:o}:o()}();
    </script>
{%- if page_options.title %}
    <title>{{ page_options.title }}</title>
{%- else %}
    <title>JustPy</title>
{%- endif %}
{%- if page_options.favicon %}
    {% if page_options.favicon.startswith('http') %}
        <link rel="shortcut icon" href={{ page_options.favicon }}>
    {% else %}
        <link rel="shortcut icon" href={{ url_for(options.static_name, path=page_options.favicon) }}>
    {% endif %}
{%- else %}
    <link rel="shortcut icon" href='https://elimintz.github.io/favicon.png'>
{%- endif %}

and integrate to template.py html generation and move javascript code to javascript directory

[WolfgangFahl]

see #685