Enhancement: Update Algorithm to create default Avatar for Pàdé about pade HOT 6 OPEN

# diff index.js.20210104-081414 index.js
1762,1764c1762,1764
<         if (!width) width = 32;
<         if (!height) height = 32;
<         if (!font) font = "16px Arial";
---
>         if (!width) width = 128;
>         if (!height) height = 128;
>         if (!font) font = "64px Arial";
1780,1783c1780,1784
<         var name = nickname.split(" ");
<         if (name.length == 1) name = nickname.split(".");
<         if (name.length == 1) name = nickname.split("-");
<         var l = name.length - 1;
---
> 	console.debug("_createAvatar: " + nickname );
>         // try to split nickname into words at different symbols with preference
>         let words = nickname.split(/[, ]/); // "John W. Doe" -> "John "W." "Doe"  or  "Doe,John W." -> "Doe" "John" "W."
>         if (words.length == 1) words = nickname.split("."); // "John.Doe" -> "John" "Doe"  or  "John.W.Doe" -> "John" "W" "Doe"
>         if (words.length == 1) words = nickname.split("-"); // "John-Doe" -> "John" "Doe"  or  "John-W-Doe" -> "John" "W" "Doe"
1785c1786
<         if (name && name[0] && name.first != '')
---
>         if (words && words[0] && words.first != '')
1787,1788d1787
<             first = name[0][0];
<             last = name[l] && name[l] != '' && l > 0 ? name[l][0] : null;
1790,1792c1789,1802
<             if (last) {
<                 var initials = first + last;
<                 context.fillText(initials.toUpperCase(), 3, 23);
---
>             const firstInitial = words[0][0]; // first letter of first word
>             var lastInitial = null; // first letter of last word, if any
> 
>             const lastWordIdx = words.length - 1; // index of last word
>             if (lastWordIdx > 0 && words[lastWordIdx] && words[lastWordIdx] != '')
>             {
>                 lastInitial = words[lastWordIdx][0]; // first letter of last word
>             }
> 
>             // if nickname consist of more than one words, compose the initials as two letter
>             if (lastInitial) {
>                 // if any comma is in the nickname, treat it to have the lastname in front, i.e. compose reversed
>                 const initials = nickname.indexOf(",") == -1 ? firstInitial + lastInitial : lastInitial + firstInitial;
>                 context.fillText(initials.toUpperCase(), 20, 88);
1794,1795c1804
<                 var initials = first;
<                 context.fillText(initials.toUpperCase(), 10, 23);
---
>                 context.fillText(firstInitial.toUpperCase(), 44, 88);
1796a1806,1807
> 
>