#160025746 Fix push messages not sending error

[olusoladavid]

What does this PR do?

Fixes error in push message sending procedure.

Description of Task to be completed

Push messages are not sent due to a JSON parsing error in the sendReminder.js file. The solution implemented is to:

• Parse push subscription JSON from the database and pass the parsed JSON into webpush.sendNotification() function as the first argument
• Test that the local development server pushes
• Ensures tests pass

How should this be manually tested?

• Pull branch into local machine
• Start development server with npm run dev
• Send a valid push subscription using the format below to PUT /profile

{
"push_sub": {<validPushSubscription>},
"reminder_set": true
}

• Run babel-node server/workers/sendReminder.js to force a push message send

What are the relevant pivotal tracker stories?

#160025746

[coveralls]

Pull Request Test Coverage Report for Build 141

• 5 of 5 (100.0%) changed or added relevant lines in 1 file 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 139:	0.0%
Covered Lines:	182
Relevant Lines:	182

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💛 - Coveralls