Make assists part of stats

[Pablete1234]

Supercedes #1467 , makes it so assists are fully integrated into pgm, showing on match end stats, tablist, etc

Adding assists made certain things not work out as well as they used to (eg: "Your stats: " line) so they were modified and enhanded, here's how it looks:

• Multiple players can be shown for a stat now
• If over 3 players have a stat, it instead goes to "several Players" with a hover
• If over 10 players have a stat, it will just show "many, many players" and no hover (no point in showing the 20 ppl who all got 1 death in blitz)
• Instead of showing "Your stats", they show as "(You: x)"
• "You" is omitted if you're in the list of top players for that stat
• If a stat max is 0 , it is no longer displayed at match end