Quick refactor of layouts/dashboard/index.js

[Lissy93]

Another quick PR, this one just applies a few small improvements to the dashboard/index.js file, to remove some unnecessary code, make it a tiny be more performant, and to neaten up a few things.

Summary of changes:

• In the sortCardsByDate function, I parsed the date and just sorted numerically to avoid an extra operation
• The tagsToString function was simplified using join
• Updated the generateCards function to first sort the projects, then filter them, and finally map them to JSX elements
• Made sure that the functions filterProjectsByQuery and generateCardElement are called properly in generateCards
• And updated to call to generateCards in the Dashboard component with the necessary arguments
• Removed unused imports
• Removed unused variables
• Removed trailing spaces and excess blank lines
• Improved efficiency of sorting algo
• Extracted some logic out of the markup
• Renamed a few vars to be more readable
• Fixed some indentation
• Ran prettier

I couldn't find the tests, so u might want to double check it works as you expect before merging ;)

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[ANG13T]

Thanks for cleaning things up, haha! I really appreciate it ✨🚀