Send email notification upon scan completion

[mathuriga]

Purpose

This PR adds send an email notification upon scan completions feature. In addition to this, filtering view scans based on product name also incorporated.

Goals

Send email notification upon scan completion
Filter scan based on product name

User stories

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Release note

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Documentation

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Training

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Certification

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Marketing

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Automation tests

• Unit tests
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• Integration tests
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Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines? yes
• Ran FindSecurityBugs plugin and verified report? yes
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets? yes

Samples

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Related PRs

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Migrations (if applicable)

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Test environment

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Learning

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[ayomawdb]

Can we reuse the GmailApiUtil for this purpose? @mathuriga

[ayomawdb]

Ok.. I think this PR was sent way before the Util was created. Approving this for now. Let's create a GitHub issue for future improvment

[ayomawdb]

@mathuriga please check travis also before proceeding

[ayomawdb]

@mathuriga Please check on the conflicts

[ayomawdb]

Suggested change

	}
	}

[ayomawdb]

Suggested change

	@Override public boolean clearScan(String id) {
	@Override
	public boolean clearScan(String id) {

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