Add Language selector

[emibcn]

Let the user select his/her preferred language:

• Language selector component could be placed directly into the menu
• It already has a data source at App's state passed all way down to the Menu
• If changed, all app is already translated into the selected language

[Abhijith126]

can I take this?

[emibcn]

@Abhijith126 Of course!

[Abhijith126]

Please feel free to assign this ticket to me. I will fork and start work on this.

[emibcn]

Please feel free to assign this ticket to me. I will fork and start work on this.

Done!

[Abhijith126]

@emibcn, I have added a new Menu, Language after About.
Once selected the below dialog appears. Is this the expected behavior?
Also, how do you want to display the list of Languages?.
Let me know your thoughts on this,

[emibcn]

Looks good!

A couple of thoughts:

• Use some Material UI element (for example, https://material-ui.com/components/radio-buttons/ )
• Show actual language name instead of code and remove duplicates, something like (not tested; would need to add name attribute on each language):

const keys = Object.keys(available);
keys
  // From https://www.javascripttutorial.net/array/javascript-remove-duplicates-from-array/
  .filter((key, index) => {
     return keys.indexOf(key) !== index;
  })

[Abhijith126]

I have created a PR with the changes and added translations for words like language based on google translate. This needs to be verified.
Please check and let me know if any changes are required.

[emibcn]

Commented on #19 (review)