Fixed scissor animations in multiplayer

Fixed LUA errors that happen in multiplayer.
Fixed Gordon's Stick animations in multiplayer
NOTE: Gordon's Fists (not #2) is designed for Single Player. It works in multiplayer, but animations and sounds don't work properly because of the original code written by the author.

RAM instability happened during an update, reupdated just to be sure if it's okay.

Requested by a subscriber: Shovel (Flight) no longer shakes the screen (The delay is already removed)

Minor fix regarding to Motion Sensor Bomb timers

Divided the shovel into two parts: normal and flight mode
The shovel now shakes the screen when hitting
Shovel's secondary attack now has a delay to match with the animation
Added the Greaser Gun
Added Gordon's Magical Stick
Buffed the Alyx Gun firing speed to match with SMOD version
Motion Sensor Bombs now have laser to detect
H&K MP5 has been simplified (Left Click: Fire; Right Click: Launch a grenade)
If you have any errors, feel free to discuss.

Added H&K MP5;
Fixed world animations;
Added spawnmenu icons, VGUI icons and killicons to some weapons;
Modified some text strings.