Revert "Remove Barnet check for external_id display"

This reverts commit 87451200e32a57947bb7b9facc4efb4f6644973b.

Reports that were sent when the Barnet integration was in place
still have an external_id which should be displayed.
Add MAPIT_GENERATION variable, to pin whitelist.

Otherwise, when MapIt Global is updated, the 'point' lookup, as it only
returns the current generation by default, might no longer return the
areas present in the whitelist.
Set site_name and signature email variables for alerts

so we can include the name of the site non TT templated emails
Only return html from problem->body if we have context

this means we can use this in email templates and get the correct non
html text back even if AREA_LINKS_FROM_PROBLEM is true
Update all email templates with new text.

And FixMyStreet.com specific open questionnaire page.
Merge branch '700-auto-emails'
Latest pulled translations from Transifex.
Version 1.4.
Add change password link to Your reports page.
Add *.swp to .gitignore
Don't run some crons by default, rejig timings.
Version 1.4.1.
Refactor SendReport::Open311 to cobrand hooks

Avoid doing cobrand-specific logic within SendReport::Open311.
Instead:

    - inflate a cobrand from the row's cobrand
      (complex cases such as UK may then defer to other cobrands
      depending on bodies_str)
    - add a 'call_cobrand_hook' method to Cobrand::Base which
      calls a cobrand method *if* it is defined.
    - the hooks defined are:
        open311_config:   set extra fields and $revert
        open311_pre_send: set endpoints and munge data
        open311_zero_result_on_fail: temporary behaviour required for
            West Berks
    - create two dummy cobrands (West Berks and Cambridgeshire)
      to be able to dispatch these hooks to consistently.

These are tested in the new t/app/sendreport/open311.t, which does
not send any actual reports, but just checks that all the data is
munged into the expected format.  (tests under t/open311* should
already test the actual sending)