#537 #538 #539 #540

[Roni-Neto]

• Added more words with translations: More translations added #537
• After added in the new words with the Portuguese translation: Portuguese, with new translations #538
• Change the theme directly in the preferences: Added in preferences light or dark theme #539
• Added in the preferences options to make the action buttons colored: Color on action buttons #540
• Added name of the file being edited and a back button in a better location: added name of the file being edited #542

I put them apart and can accept one or more changes

[prasathmani]

PR merged