Practice mode improvements

[MLGSW4G]

1. Use grenade IDs instead of names. Gonna be more convenient especially when grenade name is long.
   1.1. Allow the use of whitespaces in grenade names. Maybe in quotes like this: .savenade "grenade name" "optional description".
2. Add a command which teleports you back to the spot where you threw your last grenade.
3. Spawned bots should use weapon you were using when spawning them.
4. Customizable bot names, if possible (.bot <name>).

[shobhit-pathak]

Hey!

Thanks for the suggestions!

1. I'll have a re-work on grenade saving system, in which I'll pick this up
2. I'll be adding this in the next update
   3 and 4 will also get picked up when I'll be reworking on .bot approach, currently it is built using a lot of workarounds :P

Thanks!