Add Europa League and fix pipeline

jenkinsfiles/APIFootballUpdater/Jenkinsfile

@@ -25,8 +25,8 @@ pipeline {
                             } catch (Exception e) {
                                 telegramSendManual("TLW-Database-Tool crashed!")
                             }
-                            String output = readFile 'log.txt'
-                            if(output != "") {
+                            String outputString = readFile 'log.txt'
+                            if(outputString != "") {
                                 ArrayList<String> outputList = outputString.replace("\n\n", "\n").split('\n').toList()
                                 outputList = clean(outputList)
                                 outputList.each {