Fix of the issue that time on the lock screen was
getting illegible after a few hours. This change
fixes the problem by performing deep refresh
instead of fast refresh every 30 minutes. The
refresh rate can be easily changed, as it is stored
in settings database.
1. Prepare Pure and Bell specific `Application`
classes and add them to `app` target:
- `products/BellHybrid/apps/Application.cpp`
- `products/PurePhone/apps/Application.cpp`
2. Update `CMakeLists.txt` files.
3. Move `ApplicationBell` implementation to Bell-specific
`Application` class and remove `ApplicationBell` files.
4. Change Bell apps parent classes from `ApplicationBell`
to Bell-specific `Application` class.
5. Rename `Application` to `ApplicationCommon` in the rest of the files.
Added virtual method to Window class in order to be able
to prepend specific application name to the window name.
It wasn't possible to use existing getName method as it is
used throughout the codebase for switching windows
