profile casing fixes

[owocki]

Description

Fixes the issue where if you put an uppercase char in the URL the system will not be able to find u rprofile

Refers/Fixes

self

Testing

tested locally
http://gitcoin.co/Virtual-Face
http://gitcoin.co/Owocki

[codecov]

Codecov Report

Merging #6675 into master will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master    #6675   +/-   ##
=======================================
  Coverage   27.13%   27.13%           
=======================================
  Files         291      291           
  Lines       26959    26959           
  Branches     3974     3974           
=======================================
  Hits         7316     7316           
+ Misses      19375    19371    -4     
- Partials      268      272    +4     

Impacted Files	Coverage Δ
app/app/urls.py	86.20% <ø> (ø)
app/dashboard/views.py	11.05% <0.00%> (ø)
...rketing/management/commands/no_applicants_email.py	0.00% <0.00%> (ø)
...eting/management/commands/assemble_leaderboards.py	40.05% <0.00%> (ø)

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