Change SSH URLs of the repositories to HTTPS

src/backend/controllers/algorithms.js

@@ -94,7 +94,7 @@ const cacheCategories = () => {
 const downloadCategories = () => (
   fs.pathExistsSync(repoPath) ?
     execute(`git fetch && git reset --hard origin/master`, repoPath) :
-    execute(`git clone git@github.com:algorithm-visualizer/algorithms ${repoPath}`, __dirname)
+    execute(`git clone https://github.com/algorithm-visualizer/algorithms.git ${repoPath}`, __dirname)
 );
 
 let categories = [];

src/backend/controllers/tracers.js

@@ -29,7 +29,7 @@ const trace = lang => (req, res, next) => {
 const buildRelease = release => (
   fs.pathExistsSync(repoPath) ?
     execute(`git fetch && ! git diff-index --quiet ${release.target_commitish}`, repoPath) :
-    execute(`git clone git@github.com:algorithm-visualizer/tracers ${repoPath}`, __dirname)
+    execute(`git clone https://github.com/algorithm-visualizer/tracers.git ${repoPath}`, __dirname)
 ).then(() => execute(`git reset --hard ${release.target_commitish} && npm install && npm run build && ./bin/build`, repoPath));
 
 GitHubApi.getLatestRelease('algorithm-visualizer', 'tracers').then(buildRelease);