gmod_game: C4 now a bit riskier to disarm at lower timer sett..

Revision 517
C4 now a bit riskier to disarm at lower timer settings, more unsafe wires.
Reduced C4 explosion damage radius when it explodes due to a failed disarm attempt. Added a tip about this.
Some misc code cleanup elsewhere.
Changed Files:
[ul]
[li]trunk/gamemodes/terrortown/entities/entities/ttt_c4/cl_init.lua [/li][li]trunk/gamemodes/terrortown/entities/entities/ttt_c4/shared.lua [/li][li]trunk/gamemodes/terrortown/entities/weapons/weapon_zm_mac10/shared.lua [/li][li]trunk/gamemodes/terrortown/gamemode/cl_tips_text.lua [/li][li]trunk/gamemodes/terrortown/gamemode/vgui/sb_main.lua[/li][/ul]

Committed By Stefan van der Meer