Merge branch 'frontend-devel'

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

client/src/components/navigation/Navigation/navigation.scss

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

client/src/components/navigation/Sidebar/sidebar.scss

client/src/components/navigation/Tabs/tabs.scss

client/src/components/ui/Avatar/avatar.scss

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

client/src/components/ui/Completion/completion.scss

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

client/src/components/ui/LongText/markdown.scss

client/src/components/ui/Popup/popup.scss

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

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

client/src/components/ui/ProjectSlide/project-slide.scss

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

client/src/components/ui/TextInput/text-input.scss

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

client/src/components/ui/TimeInput/time-input.scss

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

client/src/components/ui/User/user.scss