Update 'lib/Service/LangRepository.php'

Resolve web app BSOD
giving the following error due to no proper escaping.

    "exception":{                                                                                                                                                                                                                          +
        "Exception":"Doctrine\\DBAL\\Exception\\InvalidFieldNameException",                                                                                                                                                                +
        "Message":""                                                                                                                                                                                                                       +
        An exception occurred while executing a query: SQLSTATE[42703]: Undefined column: 7 ERROR:  column "lang" does not exist                                                                                                           +
        LINE 1: ...configvalue FROM "oc_preferences" WHERE configkey="lang" and...

Signed-off-by: sergeng <sergeng@yahoo.fr>

.drone.yml

@@ -20,6 +20,9 @@ steps:
         include:
           - develop
           - feature/*
+      event:
+        - push
+        - pull_request
 
   - name: release
     image: deblan/devenv
@@ -42,6 +45,8 @@ steps:
           - feature/*
         include:
           - master
+      event:
+        - push
 
 volumes:
   - name: artifacts

.metroline.yml

@@ -1,7 +0,0 @@
-version: '1'
-image: deblan/devenv
-jobs:
-  build:
-    script:
-      - npm install
-      - make npm-build

lib/Service/LangRepository.php

@@ -26,7 +26,7 @@ class LangRepository
         $qb = $this->db->getQueryBuilder();
 
         $qb->select($qb->createFunction('DISTINCT configvalue'))
-            ->where('configkey="lang" and appid="core" and configvalue<>"en"')
+            ->where('configkey=\'lang\' and appid=\'core\' and configvalue<>\'en\'')
             ->from('preferences')
         ;