Empowerment & A little bit Optimization

[fmu1337]

Optimizations:

• Using OnClientSayCommand instead of say & say_team hooks.
• A little bit reduced memory usage.
• Using FormatEx instead of Format, where using Format it is not necessary. Empowerment's: -Replaced Health overflow spawn protection on godmode method. That's better, because if some plugins change HP in interval between start of spawn protection and end of spawn protection, in result - HP reverts back.
• Added ConVar "cssdm_addictional_menu_cmds". When player presses F1 / F2 buttons - he do not need to type "guns" into chat.

[fmu1337]

@Drifter321, no answer to my pull request?

[Drifter321]

Everything looks good to me however, there currently exists a problem with the building of CSSDM using a very old version of SM for the plugins that needs to be fixed before it can be merged.