Run code checker on more shipped apps

Adds:
- sharebymail
- systemtags
- theming
- workflowengine

Signed-off-by: Lukas Reschke <lukas@statuscode.ch>

.drone.yml

@@ -22,6 +22,9 @@ pipeline:
       - ./occ app:check-code admin_audit
       - ./occ app:check-code comments
       - ./occ app:check-code federation
+      - ./occ app:check-code sharebymail
+      - ./occ app:check-code systemtags
+      - ./occ app:check-code theming
       - ./occ app:check-code workflowengine
     when:
       matrix:

apps/sharebymail/lib/ShareByMailProvider.php

@@ -37,6 +37,7 @@ use OC\Share20\Share;
 use OCP\Share\Exceptions\ShareNotFound;
 use OCP\Share\IShare;
 use OCP\Share\IShareProvider;
+use OCP\Template;
 
 /**
  * Class ShareByMail
@@ -208,7 +209,7 @@ class ShareByMailProvider implements IShareProvider {
 	 */
 	protected function createMailBody($template, $filename, $link, $owner, $initiator) {
 
-		$mailBodyTemplate = new \OC_Template('sharebymail', $template, '');
+		$mailBodyTemplate = new Template('sharebymail', $template, '');
 		$mailBodyTemplate->assign ('filename', $filename);
 		$mailBodyTemplate->assign ('link', $link);
 		$mailBodyTemplate->assign ('owner', $owner);