improvements for tabs, task detail page

client/src/components/navigation/ButtonLink/button-link.scss

client/src/components/navigation/Header/header.scss

client/src/components/navigation/Navigation/index.tsx

client/src/components/navigation/Tabs/index.tsx

client/src/components/ui/Button/button.scss

client/src/components/ui/Comment/comment.scss

client/src/components/ui/Comment/index.tsx

client/src/components/ui/DetailBox/detail-box.scss

client/src/components/ui/DetailBox/index.tsx

client/src/components/ui/Project/project.scss

client/src/components/ui/Tag/index.tsx

client/src/components/ui/Tag/tag.scss

client/src/components/ui/Task/index.tsx

client/src/components/ui/Task/task.scss

client/src/components/ui/Tooltip/tooltip.scss

client/src/index.scss

client/src/pages/AppWrapper.tsx

client/src/pages/Tasks/TaskDetail/TaskAssignees/index.tsx

client/src/pages/Tasks/TaskDetail/TaskComments/index.tsx

client/src/pages/Tasks/TaskDetail/index.tsx