Remove need of setting more than one facebook_admin

According to Facebook Graph API docs, fb:admins meta tag stands to let
Facebook users manage/view insights[1] and comments[2] of a url. App
administrators are already included in this list, so there is no need to
accept more than one user in the helper.

[1]: https://developers.facebook.com/docs/insights/
[2]: https://developers.facebook.com/docs/plugins/comments/
Rename fb_admins helper to facebook_url_admin
Rename project state event from approve to launch
Move some project scopes to admin

These scopes are used only on admin.
Rename Project#address and User#address to #location
Extract user/project address methods to a concern

close #53 and Close #52
Remove unused #to_a from Channel
Improve #location= readability in location handler
Add force SSL and remove unnecessary force_http
Remove double quotes and change should to expect on project observer spec
Change push_to_soon event name to approve
Add approve project to channels admin
Create notification when project is approved
Merge pull request #187 from neighborly/jl-launch-project

Rename project state event from approve to launch
Update neighborly-admin version
Change the project approved notification subject
Revert "Remove css for remaining attempts alert on bank acconts confirmation"

Related to neighborly/neighborly-balanced-bankaccount#49

This reverts commit 11581dc990c8356552207f2cfc4b479859e017a7.
Improve thank you page for contributions waiting for bank account verification
Remove unused route from projects
Update balanced gems