[5.0.4] item_ crash fix and admin activity tag config

[azalty]

• Fixed a crash that would occur if there was an 'item_' in start weapons (commit) - thanks @Tuberculosis-FP for the report
• Added sm_hosties_chat_activitytype (commit) - a cvar to chose between the [SM] tag or plugin tag for admin activity messages. It defaults to 1: plugin tag.

---

This discussion was created from the release [5.0.4] item_ crash fix and admin activity tag config.