Removing "`" from db query.

[daniel-samson]

Description

The issue was related to #1525, #856 and #875.

Prospect Lists:
Quoting the column 'type' because it is a keyword in MySQL is bug.
The responsibility should be in the database manager. I have
removed the quotes and the query seems to work without them.

I can't see why it was added in the first place as both engines on
MySQL and SQL seem to process the query without the need for
quotations or brackets. Perhaps it was just as a precaution.

Reports:
I have added the quoteIdentifier to reports, because the table alias is quoted and the quotation should be handled by the database manager.

Motivation and Context

• Provides a more correct solution

How To Test This

• Retest the issues I have linked.

This change has been tested on:

• Ubuntu 14.04 PHP 5.6 / MySQL 5.6
• Ubuntu 16.04 PHP 7 / MySQL 5.7
• Windows Server 2008 R2 / SQL Server 2008 R2

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Final checklist

• My code follows the code style of this project found here.
• My change requires a change to the documentation.
• I have read the How to Contribute guidelines.