Add styles for task-skill UI

[begedin]

Problem

While there is some styling in place, the actual, proper styling for the task-skill UI on the task page and the task list page is missing

• Filter styles are displayed in Add skill filter to task list page #1051 and should be handled as part of that issue

• Styles when on the task page have the following look:

• Styles on the index page are similar to project skill styles:

• Styles for the new task page should be handled as part of that PR and will be described in Add task skill UI to the new task page #1046

References

Progress on: #1042