Fix invoice generation and other minor cosmetic items

app/Models/Account.php

@@ -91,6 +91,11 @@ class Account extends Model implements IDs
 		return $active ? $query->active() : $query;
 	}
 
+	public function site()
+	{
+		return $this->belongsTo(Site::class);
+	}
+
 	public function taxes()
 	{
 		return $this->hasMany(Tax::class,'country_id','country_id');

app/Models/Rtm.php

@@ -8,6 +8,4 @@ class Rtm extends Model
 {
 	protected $table = 'ab_rtm';
 	public $timestamps = FALSE;
-
-
 }

app/Models/Service.php

@@ -618,7 +618,7 @@ class Service extends Model implements IDs
 
 			// Two Yearly
 			case 5:
-				if (!$this->product->price_recur_strict)
+				if (! $this->product->price_recur_strict)
 					$date = $this->getInvoiceNextAttribute()->addYear(2)->subDay();
 				else {
 					$date = $this->getInvoiceNextAttribute()->addYear(2)->subDay()->endOfYear();