Modifies put methods to send siteSlug to DB

[manuelurenah]

Description

• In order to handle more advance features in amphora we added new columns in the public tables of postgres db.
• Modifies publish, create and putLatest methods from services/pages to be able to send the siteSlug to the db.
• Modifies put, methods from services/uris to be able to send the siteSlug to the db.
• Modifies putRouteFromDB, methods from services/response to be able to send the siteSlug to the db.
• This is part of https://github.com/clay/amphora-storage-postgres/issues/33 and https://github.com/clay/amphora-storage-postgres/pull/45

QA

In order to be able to test this feature, you should link this package and https://github.com/clay/amphora-storage-postgres/pull/45 in a clay project. I've been using https://github.com/clay/clay-starter to develop this feature, that's a good starting point.

Testing steps

1. Go inside a clay project directory (i.e.: clay-starter)
2. Spin up an instance of clay with make
3. Open another terminal window or tab and make sure adminer is up and running using docker-compose up -d adminer
4. Make your way into the app directory (or where the package.json file is located) and link the previously mentioned packages with npm link amphora && npm link amphora-storage-postgres (make sure the packages are in the correct branch and linked)
5. Restart the clay instance with rs. After it's done, you should a message stating Migrations Complete
6. Go into http://localhost:8080 an login the db (system, server, username and database are all postgres; password is example)
7. Check that the schemas of all public tables have the following columns: created_at, which should default to the date the row was created; updated_at, which should default to the date the row was created and update itself if the data changes; and site_id, which should contain the site slug
8. Bootstrap the starter data with make bootstrap (where the Makefile is located)
9. You should be able to see in all the public tables new entries with all the previous columns plus the new ones.
10. You should be able to update, publish, archive and everything else without ay problems

[coveralls]

Pull Request Test Coverage Report for Build 2343

• 40 of 40 (100.0%) changed or added relevant lines in 7 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 2339:	0.0%
Covered Lines:	4046
Relevant Lines:	4046

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💛 - Coveralls