Implement contextual documentation link for components

User stories for Components

• As a developer, I would like to set custom documentation links for components in component properties through console so that editors and authors can refer to these links when they need help
• As an editor/author, I’d like to see the specific documentation links in the component properties as read only meta-data so that I can refer to related documentation while I’m authoring

Scope:

• Introduce a new meta-data for components which can be added through console by developers
• The developer can set a specific URL on the metadata for their custom documentation per component type
• This meta-data will be available in an icon in the experience manager component panel on right hand side 
• This meta-data should be only read only for editors and authors in the CMS
• When editors/authors click on the icon which includes the URL, it should open the customers documentation site on a new tab outside of the CMS.
• Show a tooltip when user hovers over the icon “Internal Documentation”
• The documentation link icon will not be shown if the documentation link is not set by the developer in the console.

Designs and changes agreed on the cycle planning on Nov 2:

• The placement of the link will be in the "i" icon on the top right corner as shown in the design below

• The "i" icon should be replaced with the "?" icon used in the help menu in the left hand side navigation menu