Revert "revert data and layout role to be object"

This reverts commit 655508a.

Author: archmoj

src/plots/frame_attributes.js

@@ -39,15 +39,13 @@ module.exports = {
     },
     data: {
         valType: 'any',
-        role: 'object',
         description: [
             'A list of traces this frame modifies. The format is identical to the',
             'normal trace definition.'
         ].join(' ')
     },
     layout: {
         valType: 'any',
-        role: 'object',
         description: [
             'Layout properties which this frame modifies. The format is identical',
             'to the normal layout definition.'