Oauth fixes

[jasonyess]

Right now the oauth is kinda unreliable

• removed duplicate GSI (google sign in) scripts
• Swapping async for defer in the GSI script definitions seemed to make it more consistent but i dont really know why :p (only reason i had it async in the localization impl was because the code snippet i referenced had it async)

License Acceptance

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 35.79%. Comparing base (3734d28) to head (caef7b5).

Files with missing lines	Patch %	Lines
pointercrate-user-pages/src/login.rs	0.00%	3 Missing ⚠️
pointercrate-user-pages/src/register.rs	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #359      +/-   ##
==========================================
+ Coverage   35.71%   35.79%   +0.07%     
==========================================
  Files         121      121              
  Lines        5886     5873      -13     
==========================================
  Hits         2102     2102              
+ Misses       3784     3771      -13     

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