Reimplement front-end form validation

[MatthewBozin]

Please provide a summary of the feature

Bug reports #328, #329, and #330 all have to do with front-end form validation, so this issue potentially covers them all.

Inactive front-end form validation code still exists in files like FormCreateEvent.js. If that code can be revived, then that's ideal, but writing new validation is fine.

• Reimplement the pre-existing front-end form validation (or build new validation), and update it to cover any type of invalid form data the user could send to the server.
• Validation should display an error message to the user, and prevent the user from advancing the form until the inputted information is valid.
• A good starting point would be the errors mentioned in the included bug reports, but there will most likely be others.

Which Branch should this fix be Pulled into?

PR into development

If you're interested in working on this feature, please comment so you can be assigned

[gflacruz]

I can start working on this along with #328 #329 #330

[Caleb-Cohen]

I can start working on this along with #328 #329 #330

Sounds good! Let us know if you'd to let someone else take any of them on!