Adding German translation

selling/doctype/campaign/locale/de-doc.json

@@ -0,0 +1,8 @@
+{
+ "Campaign": "Kampagne", 
+ "Campaign Name": "Kampagnenname", 
+ "Description": "Beschreibung", 
+ "Keep Track of Sales Campaigns. Keep track of Leads, Quotations, Sales Order etc from Campaigns to gauge Return on Investment. ": "Behalten Sie den \u00dcberblick of Sales Campaigns. Verfolgen Sie Leads, Angebote, Sales Order etc von Kampagnen zur Return on Investment messen.", 
+ "Selling": "Verkauf", 
+ "Trash Reason": "Trash Reason"
+}