extension manager: rename some stuff

We should rename some things:
```
permissions -> settings
company - > maintainer
company_logo -> logo
```

remove support, website, and docs,
replace with a link dictionary such as
```
{
'Website' : 'http://...',
'Github': 'github.com/asdasd',
'Support': 'mailto:support@mysite.whatever',
'Documentation': 'http://...',
'Phone': 'tel:123-456-7890'
}