Removed the vendor library

1. I did not change the unit test files. There was a space in a test file, now I removed that.

2. In the testQuestion test we have assertNotEmpty check but the db has empty values for answer fields which should not happen. In the db script those fields are declared as NOT NULL but those are empty fields. That's why I added text to those fields to make sure it's realistic.

3. I have removed the vendor library files.