more ui enhancements

new in this commit:
- rounded corners everywhere! cobalt is now safe for everyone who can't handle sharp objects.
- proper banner loading. no more jumping text!
- proper banner error handling. if banner wasn't loaded, it'll simply go grey instead of disappearing.
- links are no longer italic and are instead underlined.
- collapsible lists now have corresponding emoji.
- donate button is now highlighted with magenta instead of white.
- added a list of keyboard shortcuts to about tab.
- centered old changelog loader.

src/modules/pageRender/onDemand.js

@@ -13,8 +13,14 @@ export function changelogHistory() { // blockId 0
         let separator = (i !== 0 && i !== historyLen) ? '<div class="separator"></div>' : '';
 
         render += `
-        ${separator}${history[i]["banner"] ? `<div class="changelog-banner">
-            <img class="changelog-img" src="${history[i]["banner"]}" onerror="this.style.display='none'" loading="lazy"></img>
+        ${separator}${history[i]["banner"] ?
+        `<div class="changelog-banner">
+            <img class="changelog-img" ` +
+                `src="${history[i]["banner"]["url"]}" ` +
+                `width="${history[i]["banner"]["width"]}" ` +
+                `height="${history[i]["banner"]["height"]}" ` +
+                `onerror="this.style.opacity=0" loading="lazy">`+
+            `</img>
         </div>` : ''}
         <div id="popup-desc" class="changelog-tags">${history[i]["version"]}</div>
         <div id="popup-desc" class="changelog-subtitle">${history[i]["title"]}</div>