Add hasCompletedWizard to the User model

[dchao19]

This PR closes #297

What does this PR do?

This very brief PR adds a "hasCompletedWizard" field to the User model in Graphcool and updates full_schema.json

How does this PR make you feel? :link:

[codecov-io]

Codecov Report

Merging #302 into master will increase coverage by 0.29%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #302      +/-   ##
==========================================
+ Coverage   42.49%   42.79%   +0.29%     
==========================================
  Files          70       87      +17     
  Lines         786     1068     +282     
  Branches      178      232      +54     
==========================================
+ Hits          334      457     +123     
- Misses        444      588     +144     
- Partials        8       23      +15

Impacted Files	Coverage Δ
src/AppBody.tsx	50% <0%> (-50%)	:arrow_down:
src/forms/EditableImageLink.tsx	83.33% <0%> (-5.56%)	:arrow_down:
src/authenticated/admin/getAdminRoutes.tsx	0% <0%> (ø)	:arrow_up:
src/header/Menu.js	50% <0%> (ø)
src/utils/getUniqueId.ts	100% <0%> (ø)
src/mocks/withLoggedInUserMock.js	100% <0%> (ø)
src/AppBody.js	100% <0%> (ø)
src/authenticated/LoggedInRoutes.js	28.57% <0%> (ø)
src/registerServiceWorker.js	0% <0%> (ø)
src/mocks/localStorageMock.js	100% <0%> (ø)
... and 15 more

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