Implement expanding feature of skills and project table

[jehlers]

Following onto #1481 — To give users more information, the skills and projects tabs are meant to expand so a user can see how many projects have used a certain skill and vice versa depending on what tab they are interested in the table.

Desktop - Skills tab

Collapsed / Default

Although the "view projects" call to action is on the left, the user should be able to click on any part of the table row to expand it. (It should highlight gray on hover if possible.)

Expanded

Once expanded, the user should be able to click on the project repo link if they so choose.

Mobile - Skills tab

Collapsed / Default

Expanded

Desktop - Projects tab

Collapsed / Default

Although the "view skills" call to action is on the left, the user should be able to click on any part of the table row to expand it, except the link to the project repo itself. (It should highlight gray on hover if possible.)

Expanded

Mobile - Projects tab

Collapsed / Default

Expanded