Upgrade JS and Go deps versions (#517)

internal/i18n/locale.go

@@ -50,9 +50,10 @@ func (store *LocaleStore) loadLocaleFromYAML(localeCode, path string) error {
 	}
 
 	name := display.Self.Name(tag)
-	if tag == language.AmericanEnglish {
+	switch tag {
+	case language.AmericanEnglish:
 		name = "English"
-	} else if tag == language.EuropeanSpanish {
+	case language.EuropeanSpanish:
 		name = "Español"
 	}
 

internal/i18n/locales/en-US.yml

@@ -165,6 +165,10 @@ settings.style.removed-lines-color: Removed lines color
 settings.style.added-lines-color: Added lines color
 settings.style.git-lines-color: Git lines color
 settings.style.save-style: Save style
+settings.style.theme: Theme
+settings.style.theme-light: Light
+settings.style.theme-dark: Dark
+settings.style.theme-auto: Auto
 
 auth.signup-disabled: Administrator has disabled signing up
 auth.login: Login