Multiple fixes, read the extended description

- major code refactoring
- removed meaningless empty lines and comments
- changed some comments
- added empty lines where needed
- changed name of main file from Program.cs to BalloonsPop.cs
- changed name of file baloonsState.cs to BalloonsState.cs
- fixed multiple code inconsistencies
- replaced magic number with variables
- updated user interface
- updated task schedule