cobrand file with geocoder etc config

also, make readonly, disable photos, questionnaires, never
hide old pins

Fixes #701
remove unwanted items from navigation

basically everything bar report and help
add template for updates with only required elements

remove login, name made public, photo upload, alert sign up
add in report display template

removing so much that we might as well copy the template, especially
as we need to change the header include.
Removed from default:
    most of shadow wrap
    RSS
    list of updates which are not public
plus Report -> Clinic
Remove subscribe to updates link from around page
split out RSS link tag to its own template

makes removing RSS from cobrands much easier
blank header_rss template for ZeroTB

we don't want any RSS feeds for the site so disable
extract opengraph meta tags out to a template

for ease of alteration/removal in cobrands
blank opengraph header template for ZeroTB
Add some overrides to zurich tests to stop failure

Make sure mapit_id_whitelist set for tests that submit
change text of location search instructions
split out header logo to its own template

to make it easier to change how cobrands do headers
import base styles with colour changes

Change colour scheme to black and white
set default fonts and weight
change site logo and add css for this
top nav bar should always be black
update nav bar text

Problem -> Stockout
change mysoc nav to be language changer
Style front page location lookup

button -> orange
set background colour for input boxes
make everything a bit wider and left aligned
update the what is this for text
update content and style for front page instructions

remove photos etc
update step text
change background colour and remove crop shadow
enable generation of cobrand specific po files

This is to stop the main FixMyStreet .po file being filled up with
strings that only apply to a single Cobrand that are not relevant to
people running their own fairly vanilla version.

Restrict the list of templates that we pull strings out of by generating
a list of all the ones in currently translated cobrands for minimal
impact. Use that to create the FixMyStreet.po file in gettext-extract.

I've left the existing cobrands in but at some point we should split
these out.

Add a specific script for generating Cobrand .po files which extracts
strings from the Cobrand's templates. This is then translated and the
translated file place in the locale/$lang/LC_MESSAGES.

The the merge_cobrand_po script is run which will create an
autoCobrand.po file which has the Cobrand strings and the FixMyStreet
strings. This is then the domain used by the Cobrand.

Any cobrand specific strings from the Perl code are still in the
main FixMyStreet .po file but there should be relatively few of them so
it's less of an issue.