Deprecate explore-cc.php replacing it with CC Explore from CC Global

[MuluhGodson]

Fixes

Fixes https://github.com/creativecommons/project_creativecommons.org/issues/201 by @brylie

Description

This PR deletes the explore-cc.php file and replaces its functionality with the CC Explore Component from the CC Global Components.

Technical details

The scripts are in footer.php just before the closing body tag. Any other component to be added in future can always be initialized here.

Screenshots

When Expanded

Checklist

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  visible errors.

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