Create en-GB.csv

- added for compatibility with frappe languages
diff --git a/erpnext/translations/en-GB.csv b/erpnext/translations/en-GB.csv
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/erpnext/translations/en-GB.csv
@@ -0,0 +1 @@
+