Improve phrase to be allowed only by logged in users in free countries

[maxicapodacqua]

Fixes #1627
WIP

Screenshot

TODO:

• Test interaction between PremiumRequiredModal and new modal (will event.stopPropagation break it?)
• Dev test as a logged-in user
• Disable feature on logout

[tomivm]

Thanks, @maxicapodacqua great Job getting familiar with the Cboard code.
Excuse me. I pushed some commits to use the same capturer for premium features to also require the user to log in. (this is because right now the only features that gonna require the login of the users in free countries are also premium features. and would be easier than to have 2 different wrappers).
Let me know if you have doubts or comments, please!
Again thank you so much!