Disable save button on edit member modal and refactoring

[BvChung]

What type of PR is this? (check applicable) 🚧

• [x] ♻️ Refactor
• [x] ✨ Feature
• [ ] 🐛 Bug Fix
• [ ] 👷 Optimization
• [ ] 📝 Documentation Update
• [ ] 🔖 Release
• [ ] 🚩 Other

Describe your PR request 🔥

Prevent making a put request if inputs match original member data by disabling button and remove repetitive timestamp variable.

Related Issues 🩹

Resolves #63 Closes #63

[seesjays]

Very handy tweak. Thank you Brandon!