- Removed all jQuery AJAX calls and replaced with our fetch wrapper
- Tested the review conversation comment, resolve, unresolve, show more
files, and load diff functionality and it works as before

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Signed-off-by: Yarden Shoham <git@yardenshoham.com>
Co-authored-by: silverwind <me@silverwind.io>
(cherry picked from commit 70e077036f8d3026cecddb746a1de69e02ab9b9a)
Conflicts:
web_src/js/features/repo-diff.js