TCA-996 404 cert page -> dev

[vas3a]

https://topcoder.atlassian.net/browse/TCA-996

Implements certificate not found for both TCA certifications and FCC courses.
Refactors the Certificate layout into a separate component that's used by both TCA certifications certificate and FCC courses certificate + 404 certification pages

Since this is a big update to the certificate layout, I tested myself all the test cases for certificates as follows (I'll share with QA as well)

DESKTOP TCA certification certificate:
 - simple view for my certificate: /learn/freeCodeCamp/front-end-development-libraries/certificate
 - simple view for user certificate: /learn/freeCodeCamp/front-end-development-libraries/vasilica.olariu/certificate
 - large container view for user certificate: /learn/freeCodeCamp/front-end-development-libraries/vasilica.olariu/certificate?view-style=large-container

 - certificate not completed/not found for my certificate: /learn/tca-certifications/web-development-certification/certificate
 - certificate not completed/not found for user certificate: /learn/tca-certifications/web-development-certification/vasilica.olariu/certificate (same layout as my certification to allow user to navigate back & give other navigation options)


MOBILE TCA certification certificate:
 - simple view for my certificate: /learn/freeCodeCamp/front-end-development-libraries/certificate
 - simple view for user certificate: /learn/freeCodeCamp/front-end-development-libraries/vasilica.olariu/certificate

 - certificate not completed/not found for my certificate: /learn/tca-certifications/web-development-certification/certificate
 - certificate not completed/not found for user certificate: /learn/tca-certifications/web-development-certification/vasilica.olariu/certificate (same layout as my certification to allow user to navigate back & give other navigation options)

DESKTOP FCC course certificate:
 - simple view for my certificate: /learn/freeCodeCamp/front-end-development-libraries/certificate
 - simple view for user certificate: /learn/freeCodeCamp/front-end-development-libraries/vasilica.olariu/certificate
 - large container view for user certificate: /learn/freeCodeCamp/front-end-development-libraries/vasilica.olariu/certificate?view-style=large-container

 - certificate not completed/not found for my certificate: /learn/freeCodeCamp/coding-interview-prep/certificate
 - certificate not completed/not found for user certificate: /learn/freeCodeCamp/coding-interview-prep/vasilica.olariu/certificate (same layout as my certification to allow user to navigate back & give other navigation options)


MOBILE FCC course certificate:
 - simple view for my certificate: /learn/freeCodeCamp/front-end-development-libraries/certificate
 - simple view for user certificate: /learn/freeCodeCamp/front-end-development-libraries/vasilica.olariu/certificate

 - certificate not completed/not found for my certificate: /learn/freeCodeCamp/coding-interview-prep/certificate
 - certificate not completed/not found for user certificate: /learn/freeCodeCamp/coding-interview-prep/vasilica.olariu/certificate (same layout as my certification to allow user to navigate back & give other navigation options)