Do validation first before submit.

[franznoel]

Do validation first before submit on all forms:

• user registration/sign up
• event creation
• event update
• login
• reset password
• user profile page

Use jQuery validate instead. Also, fix forms which are not submitting correctly to Firebase.

[franznoel]

Added validation for the following pages:

• user registration.

[franznoel]

Created the following pages

• reset-password page

also applied validation.

[franznoel]

Created validation for the following pages:

• reset password
• user profile page

[franznoel]

• Merged event-creation and event-update.html
• Added validation for event.html.
• Added validation for user sign-up.html
• Added validation for login.html
• Added validation for reset-password.html.