Merge branch 'beta'

# Conflicts:
#	docs/backend_api/BAttachment.html
#	docs/backend_api/BNote.html
#	docs/backend_api/BackendScriptApi.html
#	package-lock.json
#	package.json

src/services/builtin_attributes.js

@@ -68,6 +68,7 @@ module.exports = [
     { type: 'label', name: 'executeDescription'},
     { type: 'label', name: 'newNotesOnTop'},
     { type: 'label', name: 'clipperInbox'},
+    { type: 'label', name: 'webViewSrc', isDangerous: true },
 
     // relation names
     { type: 'relation', name: 'internalLink' },