Add shortcuts and update translations

src/locales/i18n.json

@@ -31,9 +31,25 @@
 		"de": "",
 		"fr": ""
 	},
-	"Skip": {
+	"Next": {
 		"en": "",
-		"zh": "跳过",
+		"zh": "下一个",
+		"id": "",
+		"tw": "",
+		"th": "",
+		"ru": "",
+		"vi": "",
+		"es": "",
+		"pt": "",
+		"ja": "",
+		"uk": "",
+		"ko": "",
+		"de": "",
+		"fr": ""
+	},
+	"Previous": {
+		"en": "",
+		"zh": "上一个",
 		"id": "",
 		"tw": "",
 		"th": "",
@@ -95,6 +111,22 @@
 		"de": "",
 		"fr": ""
 	},
+	"PreviousChapter": {
+		"en": "",
+		"zh": "上一章",
+		"id": "",
+		"tw": "",
+		"th": "",
+		"ru": "",
+		"vi": "",
+		"es": "",
+		"pt": "",
+		"ja": "",
+		"uk": "",
+		"ko": "",
+		"de": "",
+		"fr": ""
+	},
 	"RepeatChapter": {
 		"en": "",
 		"zh": "重复本章",
@@ -127,7 +159,7 @@
 		"de": "",
 		"fr": ""
 	},
-	"PlaySound": {
+	"PlayWordPronunciation": {
 		"en": "",
 		"zh": "播放发音",
 		"id": "",