Changes to Marketplace Page for Studio Packages

Context :

With ML user will regularly navigate to the Marketplace Page for a Studio Package. For example: 

https://nos-preprod-connect.nuxeocloud.com/nuxeo/site/marketplace/package/test-multi-layer-level2?version=2.0.0

Currently the elements of the layout are not clear, these should be changed. 

To Do :
 
1. In the info block, change type Add-on, to 'Studio'
 
Currently:

Type : Addon

2. In the title, change 'by Studio' to 'by the owner of the project' 

Currently:

test-multi-layer-level2

By Studio

3. In the info block, 

Delete  :

Vendor
Studio

4. Add a default Studio category logo

Currently:

A broken image reference is displayed