Add in application title helper

Keep a consistent and usable title across all the site.
Move container div out of templates and into layout
Create helper for checking JSON responses
Add popup modal for share and embed links
DRY up controller and view use of variables and raw output

- Removed additional custom variables that are purely for shortcuts to
properties of the rid object.
- Create ‘raw’ endpoint that is pulled into other views and endpoints
for displaying the request data.
- Drop ID’s down to 8 characters - that should be enough.
Swap is_json_response to just json_response
Add in 'share' URL for sharing requests
Add in ability to embed requests into a page
Merge pull request #13 from rehttp/add-sharing-links

Add sharing and embed links