Changes

• Added Weapons UI icons (if don't have CS:S)
• Added F4 Menu
• Added more texts "Access Granted to SCP-xxx etc. (gm_site19_v43)
• Changed MTF translation
• Changed SCP-035 translation
• Changed number of SCP-106 stepsounds
• Removed unused warhead from the code
• Fixed SCP-500 UI icon (again)
• Fixed teleports from Pocket Dimension (gm_site19_v43)