List only user-accessible projects

The Gitlab API's `getAllProjects` method requires an admin user
to be connected.

Use the `api.getProjects()` method instead, which lists all
projects **accessible** to the connected user, so the proxy can be
used with a non-admin user.

Author: oxc

src/main/java/com/dkaedv/glghproxy/controller/UsersController.java

@@ -42,7 +42,7 @@ public List<Repository> getReposForUser(
 		LOG.info("Received request: username=" + username + ", per_page=" + per_page + ", page=" + page);
 
 		GitlabAPI api = gitlab.connect(authorization);
-		List<GitlabProject> projects = api.getAllProjects();
+		List<GitlabProject> projects = api.getProjects();
 
 		return GitlabToGithubConverter.convertRepositories(projects);
 	}