Admin site

@wesleykendall This is a basic admin site implementation. It has a form for creating "Admin Events." The Admin Events are simply events where the context only contains a "text" item. We could expand this to include a little more information if we want, but text seemed like a good place to start.
We've been using the following when doing methods that don't adhere to the 120 char limit:

```python
def events_targets(
        self, entity_kind, ..., ...,
        more args....):
    code starts here
```
This avoids the case when your method name might be really long and you have no room to do indentation along the end of the method name