update login, signup, contact us style

[JessicaDeMota]

update chat to only show messages belonging to people chatting

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 5d994ab):

https://wheel-call-you-9b6ca--pr189-feat-conversations-gr50zj9z.web.app

_{(expires Fri, 12 May 2023 05:52:33 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: 97edbda56d89fe61e799895d2106020047bb9ecd}

[JessicaDeMota]

Made changes to the application by removing duplicate messaging, fixing the conversational aspect by allowing users only to converse with one user at a time, and making styling changes by putting a default for surveys. Flipped the messaging as it was not detecting the sender and receiver properly.