Comment 0 for bug 1379689

In order to make it easy for developers to internationalize their apps, we should add full i18n support

- Ensure all strings are wrapped in i18n.tr() calls
- Add the required CMake rules to extract translatable messages and build translations
- (Optional) add a README.translations file explaining some concepts about managing translations

Adding the CMake rules is relatively trivial. The following MP should help with an example of what's needed. An alternative would be to create a .cmake module that all applications can reuse

https://code.launchpad.net/~dpm/libqtelegram/i18n/+merge/236284