#161254665 Add comments to articles

[wrotich]

What does this PR do?

This PR merges the add comments feature branch to develop

Description of Task to be completed?

- Allow users to comment on articles
- Allow users to view all comments of an article
- Allow users to delete comments on articles
- Allow users to comment on other comments

How should this be manually tested?

• create a python virtual environment in your local machine and start it.

$ virtualenv env
$ source env/bin/activate
$ cd env

• Clone this repo.

$ git clone https://github.com/andela/ah-orcas.git

• Switch to this branch

$  git checkout  ft-article-161254665

• Create a .env file and run it. Check sample.env file to configure yours.

$ source .env

• Run the app

$ python manage.py runserver

• Test the endpoint as per the README.md

Any background context you want to provide?

Comments allow authors to get feedback on their articles.

What are the relevant pivotal tracker stories?

#161254665

Screenshots

• A comment with replies

[coveralls]

Pull Request Test Coverage Report for Build 575

• 105 of 116 (90.52%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.3%) to 87.925%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
authors/apps/article/models.py	8	9	88.89%
authors/apps/article/renderers.py	12	13	92.31%
authors/apps/article/serializers.py	32	36	88.89%
authors/apps/article/views.py	53	58	91.38%

Totals
Change from base Build 569:	0.3%
Covered Lines:	801
Relevant Lines:	911

---

💛 - Coveralls

[Gidraf]

Add tests to improve the coverage

[Gidraf]

Add tests to improve the coverage
solve the merging conflict

[evamaina]

LGTM

[Eyansky]

LGTM