"DROP VIEW" and "IF NOT EXISTS" checkboxes have no effect when exporting views

[JayEn84]

Steps to reproduce

1. Navigate to the Export page of a view
2. Change the export method from quick to custom
3. Activate the checkboxes for "DROP VIEW" and/or "IF NOT EXISTS"

Expected behaviour

1. I expect a DROP VIEW query prior to the CREATE query when activating the DROP VIEW checkbox.
2. I did not expect an "IF NOT EXISTS" checkbox as this seems impossible when creating a view.

Actual behaviour

There is no difference in the output no matter if these checkboxes are checked or not.

Suggestion for improvement

Replace the "IF NOT EXISTS" checkbox by something like a "REPLACE" checkbox in order to achieve an output query like "`CREATE OR REPLACE VIEW view_name"

Server configuration

Operating system:
Windows 7

Web server:
Apache 2.4.16

Database:
MySQL 5.6.17

PHP version:
5.6.12

phpMyAdmin version:
Tested with 5.7.7 and 5.8.1