Introduce CSP headers to Kalamar (start of #72)

Change-Id: I84b7ff0accab3d783ad653fae123c25fee1d92b9
diff --git a/package.json b/package.json
index 703962a..0678630 100755
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "Kalamar",
   "description": "Mojolicious-based Frontend for KorAP",
   "license": "BSD-2-Clause",
-  "version": "0.40.3",
+  "version": "0.41.0",
   "pluginVersion": "0.2.2",
   "engines": {
     "node": ">=6.0.0"