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/changelog/changelogManager.js

@@ -13,7 +13,11 @@ export default function(string) {
             case "title":
                 return replaceBase(changelog["current"]["title"]);
             case "banner":
-                return changelog["current"]["banner"] ? `updateBanners/${changelog["current"]["banner"]}` : false;
+                return changelog["current"]["banner"] ? {
+                    url: `updateBanners/${changelog["current"]["banner"]["file"]}`,
+                    width: changelog["current"]["banner"]["width"],
+                    height: changelog["current"]["banner"]["height"]
+                } : false;
             case "content":
                 return replaceBase(changelog["current"]["content"]);
             case "history":
@@ -24,7 +28,11 @@ export default function(string) {
                             i["date"] ? `<span class="changelog-tag-date">· ${i["date"]}</span>` : ''
                         }`,
                         content: replaceBase(i["content"]),
-                        banner: i["banner"] ? `updateBanners/${i["banner"]}` : false,
+                        banner: i["banner"] ? {
+                            url: `updateBanners/${i["banner"]["file"]}`,
+                            width: i["banner"]["width"],
+                            height: i["banner"]["height"]
+                        } : false,
                     }
                 });
             default: