Linting tests will not work if scratch-gui is linked directly into local directory

We’re currently linking scratch-gui directly into the scratch-www directory (either through a bind mount in docker) or a symoblic link in unix. This causes the current make lint target to fail when it attempts to look in that directory for lint targets. Also, don’t bother linting node_modules

Makefile

@@ -55,7 +55,7 @@ test:
 	@make tap
 
 lint:
-	$(ESLINT) . --ext .js,.jsx,.json
+	$(ESLINT) --ignore-pattern scratch-gui --ignore-pattern node_modules . --ext .js,.jsx,.json
 	$(SASSLINT) ./src/*.scss
 	$(SASSLINT) ./src/**/*.scss