Adds JavaScript roadmap (#1537)

* Add JavaScript roadmap project file

* Make way for JavaScript roadmap

* Add JavaScript roadmap on homepage

* Add JavaScript roadmap image

* Add content skeleton for javascript roadmap

* Fix flicker issue on javascript roadmap

* Fix broken build

content/roadmaps/108-python/content/107-python-testing/100-unittest-pyunit.md

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+# PyUnit / Unittest
+
+PyUnit is an easy way to create unit testing programs and UnitTests with Python. (Note that docs.python.org uses the name "unittest", which is also the module name.)
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.digitalocean.com/community/tutorials/how-to-use-unittest-to-write-a-test-case-for-a-function-in-python'>How To Use unittest to Write a Test Case for a Function in Python</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://wiki.python.org/moin/PyUnit%C2%A0'>PyUnit Docs</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://machinelearningmastery.com/a-gentle-introduction-to-unit-testing-in-python/'>A Gentle Introduction to Unit Testing in Python</BadgeLink>

content/roadmaps/108-python/content/107-python-testing/101-pytest.md

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+# pytest
+
+pytest is a mature full-featured Python testing tool that helps you write better programs.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='blue' badgeText='Official Docs' href='https://docs.pytest.org/'>Official Docs</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.tutorialspoint.com/pytest/index.htm'>Pytest Tutorial</BadgeLink>
+
+

content/roadmaps/108-python/content/107-python-testing/102-doctest.md

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+# Doctest
+
+Python’s standard library comes equipped with a test framework module called doctest. The doctest module programmatically searches Python code for pieces of text within comments that look like interactive Python sessions. Then, the module executes those sessions to confirm that the code referenced by a doctest runs as expected.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='blue' badgeText='Official Docs' href='https://docs.python.org/3/library/doctest.html'>Doctest module reference</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.digitalocean.com/community/tutorials/how-to-write-doctests-in-python'>How To Write Doctests in Python</BadgeLink>

content/roadmaps/108-python/content/107-python-testing/102-nose.md

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+# Nose
+
+Nose is another opensource testing framework that extends `unittest` to provide a more flexible testing framework.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://nose.readthedocs.io/en/latest/'>Introduction to Nose</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.lambdatest.com/blog/selenium-python-nose-tutorial/'>Getting Started With Nose In Python</BadgeLink>

content/roadmaps/108-python/content/107-python-testing/readme.md

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+# Testing
+
+A key to building software that meets requirements without defects is testing. Software testing helps developers know they are building the right software. When tests are run as part of the development process (often with continuous integration tools), they build confidence and prevent regressions in the code.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.guru99.com/software-testing-introduction-importance.html'>What is Software Testing?</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.browserstack.com/guide/testing-pyramid-for-test-automation'>Testing Pyramid</BadgeLink>