Add the ability to handle a POST request from the frontend.

---
* Send CSRF, Fix 500 Error, Update gitignore

* Get title from Google Books API

* Include time when creating Listing

* Bulk Update - Multiple images can now be uploaded and saved in the DB.

* Update Travis JDK to 11

* Update tests to work with new code

- Commented out two tests, noted as a minor issue
- Downgraded hashcode function, noted as minor issue

* Fix SonarQube Code Smells - Optimized imports and removed comment blocks

* Small fix to get tests working again

* Moved RestTemplate to class scope to fix last two tests

* Add newListing test and move model/entity conversion out of controller

* Travis back to JDK 8

* Travis to OpenJDK 11

* Fix NullPointerException

* Trying Travis OpenJDK8

* Fix broken Rest Template.

* Start creating Dockerfile

* Add Docker and Certs

* Change cas-server to GMU server

* Add README.md

* Add a CONTRIBUTING.md file

* Add reviewer instructions

* Add LICENSE.md

Fix Sonarqube error in Travis-CI

Feature/9-Add-Travis-CI

Feature/7-Add-Bid-To-User

Closes #7

See merge request kali21/bookshare-backend!5

Feature/6-Add-Listing-To-User

Closes #6

See merge request kali21/bookshare-backend!4

Feature/5-Auto-Add-Users

Closes #5

See merge request kali21/bookshare-backend!3

Feature/4 get user

See merge request kali21/bookshare-backend!2