Merge pull request #1 from DrBAXA/master

Creating catalogs and adding view part of task
The model is done
filename changed
Merge pull request #2 from romanvintonyak/master

The model is done
exception handing changed
Merge pull request #3 from romanvintonyak/master

exceptions handing changed!
Merge pull request #4 from DrBAXA/master

Add reseiving JSON after adding and removing point