errors in backup should not prevent operations

src/logic/BackupService.py

@@ -36,10 +36,13 @@ class BackupService:
         return self._numberOfModifications >= self._maxModifications
 
     def backup(self):
+        try:
             LOGGER.info('Running backup...')
             uploader = OwncloudUploader(self._owncloudHost, self._owncloudUser, self._owncloudPassword)
             uploader.upload(self._owncloudDestinationPath, self._fileToBackup)
             self.__reset()
+        except Exception:
+            LOGGER.exception('Error performing backup')
 
     def perform_modification(self):
         self._numberOfModifications += 1