[EFFx]

I've made a little update with minor changes and fixes. I didn't find any issue after those, so I think I may have fixed everything by testing on my server, please tell me if I'm wrong.

- Changes

- Added another option on the menu
- The rtv value is now half of the number of players.
- Now the wall item is removed by it's task instead of the owner's task.
- Now you need to use KNIFE in hands to unknock a teammate.
- The 'X gave you Y item' only appears if the player is avaliable to receive the item.
- Some minor changes.
- Added getItemLevelByID() stock.
- Now the Kevlar's armor type is CS_ARMOR_KEVLAR instead of CS_ARMOR_VESTHELM
- Changed the countdown sound effect.

- Fixes

- The body that appears when the player join too late is removed.
- When more than one wall was being created, some of them were getting killed too fast.
- Sometimes (extremely rare) the redzone does not get created.
- Fixed the wall takedamage feature.
- The headshot calculation damage was wrong
- Fixed the 'pubnite_give_item' command calculations.
- Fixed an issue with the automatic parachute open feature.
- Players were killing their teammates with vehicles and were receiving kill count.

- New Features

- Added a new native: pubnite_get_command() which gives all mod's commands info.