[$50] Add back in sub-category descriptions

[jmgasper]

From Topcoder:

We would also like the ability to have short descriptions under each category and subcategories. This is something that we previously had and helped guide the user. (i.e. from a ticket we received they did not know what “MVP” was). Take short descriptions from https://apps.topcoder.com/forums/

[jmgasper]

Challenge https://www.topcoder.com/challenges/163cb4ea-3d92-4624-81c6-2e77a0fcd1da has been created for this ticket.

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[jmgasper]

Challenge https://www.topcoder.com/challenges/163cb4ea-3d92-4624-81c6-2e77a0fcd1da has been assigned to obog.

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[atelomycterus]

@jmgasper Please apply PR-#492. Thanks!

Testing

If the category description is not empty, it should be displayed:

[jmgasper]

Payment task has been updated: https://www.topcoder.com/challenges/163cb4ea-3d92-4624-81c6-2e77a0fcd1da
Payments Complete
Winner: obog
Copilot: ghostar
Challenge 163cb4ea-3d92-4624-81c6-2e77a0fcd1da has been paid and closed.

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[sdgun]

Verified in Dev by manually adding descriptions to sub categories, the descriptions are displayed under the subcategories.

[sdgun]

Verified in production, the description have been added to the given sub categories.