remade localization system once again

- new localization system: fast, dynamic, way more organized
- localization strings are WAY more descriptive
- it's now easier to add support for other languages (just one loc file instead of five)
- localization now falls back to english if localized string isnt available
- got rid of all static language selectors (probably)
- slightly updated english and russian strings
- miscellaneous settings items have been bundled together and moved to the bottom, cause they're used the least
- bottom links should no longer touch the popup border on overflow
- rearranged popup order in the rendered page
- bumped version up to 2.2.5

if you see strings that are like this: !!EXAMPLE!! or withoutspace please file an issue on github

src/modules/services/bilibili.js

@@ -1,5 +1,5 @@
 import got from "got";
-import loc from "../sub/i18n.js";
+import loc from "../../localization/manager.js";
 import { genericUserAgent, maxVideoDuration } from "../config.js";
 
 export default async function(obj) {
@@ -8,7 +8,7 @@ export default async function(obj) {
             headers: { "user-agent": genericUserAgent }
         });
         html.on('error', (err) => {
-            return { error: loc(obj.lang, 'apiError', 'cantConnectToAPI', 'bilibili') };
+            return { error: loc(obj.lang, 'ErrorCantConnectToServiceAPI', 'bilibili') };
         });
         html = html.body;
         if (html.includes('<script>window.__playinfo__=') && html.includes('"video_codecid"')) {
@@ -22,13 +22,13 @@ export default async function(obj) {
                 }).sort((a, b) => Number(b.bandwidth) - Number(a.bandwidth));
                 return { urls: [video[0]["baseUrl"], audio[0]["baseUrl"]], time: streamData.data.timelength, filename: `bilibili_${obj.id}_${video[0]["width"]}x${video[0]["height"]}.mp4` };
             } else {
-                return { error: loc(obj.lang, 'apiError', 'lengthLimit', maxVideoDuration / 60000) };
+                return { error: loc(obj.lang, 'ErrorLengthLimit', maxVideoDuration / 60000) };
             }
         } else {
-            return { error: loc(obj.lang, 'apiError', 'nothingToDownload') };
+            return { error: loc(obj.lang, 'ErrorEmptyDownload') };
         }
     } catch (e) {
-        return { error: loc(obj.lang, 'apiError', 'noFetch') };
+        return { error: loc(obj.lang, 'ErrorBadFetch') };
     }
 }