Remove npm i from justfile testall target

Justfile

@@ -21,6 +21,13 @@ save-release: build-container-release
 load-release file:
     podman load --input {{file}}
 
+# Tests every part of the project
+testall:
+    cd backend && make test
+    cd backend && make lint
+    cd frontend && npm test
+    cd frontend && npm run lint
+
 # Cleans up everything related to the project
 clean: remove-podman-containers
     podman image rm -f ttime-server
@@ -33,4 +40,4 @@ clean: remove-podman-containers
 # Cleans up everything related to podman, not just the project. Make sure you understand what this means.
 [confirm]
 podman-clean:
-    podman system reset --force
+    podman system reset --force