[ticket/11528] Refactor install_board( ) into a new mink class
* dhruvgoel92/ticket/11528:
[ticket/11528] Change click_submit() to accept id as param
[ticket/11528] Handle case when config file cant be written by installer
[ticket/11528] Change NULL to null
[ticket/11528] Fix spaces and slashes as per guidelines
[ticket/11528] Add asserts in installation steps
[ticket/11528] Use 'use' keyword to import classes to current scope
[ticket/11528] Move parent::tearDown() to end of tearDown()
[ticket/11528] Call parent::tearDown in overrided tearDown method
[ticket/11528] Instantiate $client, $driver from functional test case
[ticket/11528] Refactor install_board() code into a new class
[ticket/11528] Add behat/mink and mink-goutte-driver as dependency