Fix of wrong stats of pistol's ammo on HUD

...when player holds nade and akimbo disappears.
To test the bug: take akimbo, take grenade, press "g"  and wait for akimbo disappearing.
Then stats on HUD shows, that player has pistol with 0 ammo, instead of full magazine.
Two fixes of wrong messages about change to active/spectate mode.

First fix causes, that when player1: plays non-team mode + is in active mode + changes team to enemy, then will appear message: "you can't change to team $teamname".
Current wrong message is: "you can't change to active mode".

Second fix disables redundant info: "$playername changed to active play", after change to enemy team in non-team modes, when he is already in active mode.