Account for substitutions of players

[rodmoioliveira]

https://scientometrics.files.wordpress.com/2010/07/ger-aus-copy.png
https://scientometrics.wordpress.com/page/1/
https://scientometrics.files.wordpress.com/2010/07/esp1.png

Take in account substitutions for:

• calculate score metrics for each player
• draw edges to display the substitution relations
• display time interval in match for each player

Don't take in account substitutions for:

• calculate metrics for whole graph (this calculations must refer to only 11 nodes...)