changed names of home files
changed names of home files in app.js
changed instructions, styled them
changed total of points to be 1000, with 4 rows of ten ennemies
changed number of row to 4 in main_space_client.js
changed number of enemies and sum of points for popup message in main client.
added precision of sharing shareStep in main_space_client.js
precision of sharing debug
precision of sharing debug2
precision of sharing debug3
precision of sharing debug4