Logging the throwed IOExceptions caught by the fileuploadcontroller class
Logging the ClassCastExceptions happening in the IssueSearchCriteria class
Checking the return values of the mkdirs and delete methods of the File class when uploading a file
Formatted the code of the UserSettingsService class
Replaced the getting of the stack trace with the logging of the exceptions happening in the mail service class
Formatted the code of the IssueService class
Merge remote-tracking branch 'origin/master'