replace rightJoin -> join

Signed-off-by: Maxence Lange <maxence@artificial-owl.com>

lib/Db/CoreRequestBuilder.php

@@ -401,6 +401,7 @@ class CoreRequestBuilder {
 		if ($since > 0) {
 			$dTime = new \DateTime();
 			$dTime->setTimestamp($since);
+			// This line stuck on sqlite
 			$this->limitToDBFieldDateTime($qb, 'published_time', $dTime);
 		}
 

lib/Db/NotesRequestBuilder.php

@@ -161,7 +161,9 @@ class NotesRequestBuilder extends CoreRequestBuilder {
 			)
 		);
 
-		$qb->rightJoin(
+		// TODO: SQLite does not support RIGHT JOIN
+//		$qb->rightJoin(
+		$qb->join(
 			$this->defaultSelectAlias, CoreRequestBuilder::TABLE_SERVER_FOLLOWS, 'f',
 			$orX
 		);