Minor fixes

Major Change:
 • We have renamed the app from "NumberLine" to "Universal Numbers" because it offers much more than just a number line.
User Interface Changes:
 • Enhanced language selection, now featuring a new language search function.
 • Improved voice selection, including country flags for easier identification.
 • Fixed layouts for right-to-left languages (Arabic, Hebrew, and Persian).
 • Improved number presentation, including thousand separators based on the selected language you wish to learn.

Minor bug fixes and UI updates.