* [RAPPS] add function to set view-mode
* [RAPPS] move toolbar and searchbar into appview
* [RAPPS] remove settings and exit button from toolbar
* [RAPPS] add code to switch between list and tile mode
* [RAPPS] add auto-arrange for listview
* [RAPPS] adjust the minimum size of AppView
* [RAPPS] now image list of listview is stored inside the class
* [RAPPS] add list mode, and old list-mode are detail mode now
* [RAPPS] add check for unimplemented view mode
- Add download source in settings dialog, and apply it when download .cab file
- Now user should specify full rappmgr.cab URL
- Check if URL is vaild in settings dialog
- Move source settings to the end of struct (will refactor settings to one value per option later)
- Implement error message for all failure condition of RAPPS Download
- Implement logging for failure conditions not needing user complementary awareness (cancellation)
- Support for localization
CORE-16851