Avoid loops on an empty collection
Avoid moves in homes
Removed all data storage in views
Updated a confusing translation
Fixed the size of the board
0.4

* The design of the control buttons has evolved
* Added a new panel when the game is paused
* Added icons
* All the panels are merged into a single one
* The rendering size is set according to the zoom of the browser (except for the board)
* The events dedicated to the panel have better names
* The errors are now thrown to the console