Make responsive FE & fix UI bugs for login/main/channel UI

[VyPham23]

• Read README
• Set up environment
• Make responsive UI

[nguyentrannhan]

• login
• main
• chat

[thuthuy1901]

• responsive Login flow discord
• responsive main chat flow discord
• responsive main chat (group) flow discord

[thuthuy1901]

• read document
• fix bug login UI
• responsive UI add group
• responsive UI add friend, create group

[VyPham23]

• Scroll bug of login UI
• Header responsiveness: channel, DM, friend UI
• Done

[thuthuy1901]

• responsive UI box create channel
• fix bug UI: fix margin-left of text message second onwards, width sideBar, icon header.

[VyPham23]

• Settings > Profiles

[thuthuy1901]

• fix bug UI Settings > Profiles
• sycn border-radius button
• edit UI log out

[VyPham23]

• "Clan" --> "Category"

• done