Refactor Organisation Edit Form

**Some refactoring to layout of Organisation edit page**
**Staged at http://marian-localsupport.herokuapp.com**

- Make checkboxes stand out by putting form inside a table - https://www.pivotaltracker.com/story/show/67469208

- Change "Donation info" label to "Donation link" - https://www.pivotaltracker.com/story/show/67015490
- Add a row to the table to list  organisation administrator emails or show "This organisation has no admins yet" message rather than having them at the top of the page 

- Add map instead of blank space on edit page.