Fix binkp remote closing connection, add/delete session details, menu item this system, minor CSS fixes, move system form editing to individual files

app/Models/System.php

@@ -23,6 +23,37 @@ class System extends Model
 			->orderBy('point_id');
 	}
 
+	/**
+	 * Session Passwords for system
+	 *
+	 * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
+	 */
+	public function sessions()
+	{
+		return $this->belongsToMany(Zone::class)
+			->withPivot(['sespass','pktpass','ticpass','fixpass','zt_ipv4','zt_ipv6']);
+	}
+
+	/**
+	 * If this system is configured as this host
+	 *
+	 * @return \Illuminate\Database\Eloquent\Relations\HasOne
+	 */
+	public function setup()
+	{
+		return $this->hasOne(Setup::class);
+	}
+
+	/**
+	 * Zones a system has addresses for
+	 *
+	 * @return \Illuminate\Database\Eloquent\Relations\HasManyThrough
+	 */
+	public function zones()
+	{
+		return $this->hasManyThrough(Zone::class,Address::class,'system_id','id','id','zone_id');
+	}
+
 	/* GENERAL METHODS */
 
 	/**