Allow users to update Namespace profile info

[chouseknecht]

As a user, if I have access to a GitHub namespace, I should be able to update the info Galaxy has for the namespace. Editable attributes in Galaxy should include:

• Title
• Description
• Link to a website
• Email address
• Link to mailing list
• IRC Channel
• Link to Slack

The above info will be displayed on the namespace page (i.e. galaxy.ansible.com/namespace). In addition, lets add the following as well:

• Total download counts across all roles
• Total stars ''
• Total watchers ''

Verified Org

• Create a form where a user can request org verification. This is for GitHub organizations only, not individuals.
• The form should only be available if the namespace is a GitHub organization.
• Create an admin page (accessible by Ansible staff) where we can click a button that marks a namespace as 'verified'.
• Need a logo or something that indicates verified on the namespace page.

We need an Ansible Partner indicator

• Create an admin page (accessible by Ansible staff) where we can click a button that marks a namespace as being that of an Ansible partner.
• Need a logo or something to indicate Ansible partner on the namespace page in Galaxy.