French and Russian, Brazilian portuguese, Languages in alphabetic

order
Added:
French and Russian - Both languages are translated enough to be usable.

Fixed:
Brazilian portuguese - The YAML file had an underscore instead of a
hyphen in its name, so it was not displayed as an optiom

Refactored:
Languages in alphabetic order - Rearranged the languages according to
their alphabetic order, except for english, which is the standard and
most used language

src/renderer/main.js

@@ -23,7 +23,7 @@ Vue.component('font-awesome-icon', FontAwesomeIcon)
 Vue.use(VueI18n)
 
 // List of locales approved for use
-const activeLocales = ['en-US', 'de-DE', 'pt-PT', 'fi', 'pt-BR', 'vi', 'zh-CN', 'zh-TW']
+const activeLocales = ['en-US', 'de-DE', 'fi', 'fr-FR', 'pt-BR', 'pt-PT', 'ru', 'vi', 'zh-CN', 'zh-TW']
 const messages = {}
 
 // Take active locales and load respective YAML file