Drupal 7.x

I know there are instructions out there somewhere, but I'm a little pressed for time.. 

I'm trying to figure out how to create a custom page template that gets used for a specific page - not a node template, I need the entire template to be different for, example, this page: mywebsite.com/custompagename

(it's a basic page content type, but I don't want to affect other basic pages)

I'm trying to do something with a page--custompagename.tpl.php file in the main theme folder, but that doesn't seem to have worked.

I have a few libraries in the unregistered section of the report. Like colorpicker, ckeditor, etc.

What does this mean exactly and is it something that needs to be worried about? If so, how is it resolved?

I have just installed a new Drupal 7 site using Acquia Dev Desktop. I have made myself the local administrator through Computer Management. I am tryin to update Drupal Core from version 7.61 to 7.64. I run the following commands:

drush vset --exact maintenance_mode 1

[success] maintenance_mode was set to 1.

I have set "Show as expanded" in the whole menus that I want to display the submenus, but doesn't displayed.

The structure of the menu is:

- A

-- AA

--- AA1

--- AA2

- B

And display only the 

- A

-- AA

- B

doesn't display the:

--- AA1

--- AA2

How can I fix it?

I want to show a custom content if current URL contain certain words. So far, I'm able to achieve this with the code below (works perfectly), if the path contain the word 'cart'. I want to be able to check for other words like 'blog', 'event' and 'news'. How do I go about this.