Added password page on site entry

[aidenszeto]

Relevant issue

Closes #480

Summary of change

• Added password page to protect entry into staging environment

Testing/Verification

• User should automatically be brought to password page when first entering site
  • Once password is entered, session is stored in localstorage so password page will no longer appear unless cache is cleared
  • NOTE: you can use incognito if you would like to test multiple times in succession without having to clear cache
• Message @aidenszeto to get password

[aidenszeto]

For me, even on incognito the password page only popped up once but that should be ok right?

Yeah I guess your incognito may have cached the token so should be fine