Adding go vet from hack-a-thon (#5328)

* Adding go vet to the api package

* Adding go vet to app package

* Adding go vet to manualtesting package

* Adding go vet to the model package

* Adding go vet to the store dir

* Adding go vet to utils package

* Adding missing dirs with go files

* Fixing up makefile

* Fixing up makefile

* Removing root dir

model/user_test.go

@@ -46,25 +46,25 @@ func TestUserUpdateMentionKeysFromUsername(t *testing.T) {
 	user.SetDefaultNotifications()
 
 	if user.NotifyProps["mention_keys"] != "user,@user" {
-		t.Fatal("default mention keys are invalid: %v", user.NotifyProps["mention_keys"])
+		t.Fatalf("default mention keys are invalid: %v", user.NotifyProps["mention_keys"])
 	}
 
 	user.Username = "person"
 	user.UpdateMentionKeysFromUsername("user")
 	if user.NotifyProps["mention_keys"] != "person,@person" {
-		t.Fatal("mention keys are invalid after changing username: %v", user.NotifyProps["mention_keys"])
+		t.Fatalf("mention keys are invalid after changing username: %v", user.NotifyProps["mention_keys"])
 	}
 
 	user.NotifyProps["mention_keys"] += ",mention"
 	user.UpdateMentionKeysFromUsername("person")
 	if user.NotifyProps["mention_keys"] != "person,@person,mention" {
-		t.Fatal("mention keys are invalid after adding extra mention keyword: %v", user.NotifyProps["mention_keys"])
+		t.Fatalf("mention keys are invalid after adding extra mention keyword: %v", user.NotifyProps["mention_keys"])
 	}
 
 	user.Username = "user"
 	user.UpdateMentionKeysFromUsername("person")
 	if user.NotifyProps["mention_keys"] != "user,@user,mention" {
-		t.Fatal("mention keys are invalid after changing username with extra mention keyword: %v", user.NotifyProps["mention_keys"])
+		t.Fatalf("mention keys are invalid after changing username with extra mention keyword: %v", user.NotifyProps["mention_keys"])
 	}
 }