Merge pull request #58 from deer-wmde/fix-sleep-int-conversion

fix: Deprecation warning & float to int conversion

public_html/quickstatements.php

@@ -1116,7 +1116,7 @@ public function getTemporaryBatchSummary () {
 	}
 
 	public function runSingleCommand ( $command ) {
-		if ( $this->sleep != 0 ) sleep ( $this->sleep ) ;
+		if ( $this->sleep != 0 ) sleep ( $this->usleep * 1000 ) ;
 		if ( !isset($command) ) return $this->commandError ( $command , "Empty command" ) ;
 		$command->status = 'working' ;
 		if ( isset($command->error) ) unset ( $command->error ) ;