Moved modelHelpers service in the DataSources module

Change-Id: Ife4239d8f0ca0ec12ed7db17c337deb6e06e80fe
diff --git a/src/app/config/.gitignore b/src/app/config/.gitignore
new file mode 100644
index 0000000..d6b7ef3
--- /dev/null
+++ b/src/app/config/.gitignore
@@ -0,0 +1,2 @@
+*
+!.gitignore