Updates to questions/hint text for data capture of a need

Phrasing of the questions/hint text for collecting analytics data now more consistent with the language being used in the transition workshops.
Refer to 'user contacts' rather than 'user feedback'
Return a 422 when the CSRF token is invalid

At the moment, when the CSRF token is invalid on
a HTTP POST, we acknowledge it by warning in the
logs, but we continue the request. This is a Rails 
default.

Instead, we should explicitly reject the request 
to the user. Rails encourages us to override the
verify_authenticity_token method in the controller
in order to add our own behaviour.
Return a 403 status with a message instead of a 422
Add a link to sign out
Use the separate ul.nav style
Display the sign out link in a similar way to Transition
Merge pull request #31 from alphagov/reject-unverified-requests

Reject POST requests with an invalid CSRF token
Bump ruby patch version to 1.9.3-p484
Remove the separating bullet char from the markup
Merge branch 'add-logout-link'
Merge branch 'bump-ruby-version'
Update test assertions to use the new field labels
Remove the currently_met field from Maslow

This question on the form is redundant as it is
confusing most of our users in testing, and the
users which actually require this information
already capture it through another process in the
transition project.

This should be merged before we remove this from
the Need API. Maslow can create and update needs
fine without this field as it gets set to null in
the API.
Merge pull request #35 from alphagov/remove-currently-met-question

Remove the currently_met field from Maslow
Merge pull request #23 from alphagov/update-hint-text

Updates to questions/hint text for data capture of a need
Remove feature to adjust numbers by arrows on need form

- Change number input types to text
- Use pattern attribute to ensure only numbers can be entered
- Pivotal #60754212
Merge pull request #36 from alphagov/remove-input-type-number

Remove feature to adjust numbers by arrows on need form
Add a form to search needs.

This is currently separate from the organisation filter, such that they
won't both work at the same time. We should take a look at merging these
together.
Remove 'commit' field name from org filter button.

Rails adds this by default, but it's just cluttering up our URL
parameters.