Modernized test setup
pep8
Fixed migrations.

Fixes problems introduced by 08277916abb09382a1241aadafa53c9881315fd5
Fixed the migration fix. Missing argument...
Added migration for filterpage
Added admin page for FilterPage (and a slug field)
Added view and url for filterpage
Added edit link
Added page title for filterpage.

Also had to tweak the functional test because we now use a proper
template which shows breadcrumbs which needs a lizard-ui homepage...
Refactored get_feature_info.

Splitted it up a bit to make it easier to use for grabbing ALL feature's values.
Fixed typo
Extracting all feature values into dropdowns
Actually using the x/y/radious values in search_one_item()
Addex empty initial option to dropdowns.
Added logging to bbox calculation.
Made getfeatureinfo buffer parameter smaller for the big queries.
It seems like a buffer=16 setting makes the bbox 16 times bigger or so.
I retained buffer=16 for the currently-working single-feature-selection
function.

Also added ordering for featurelines
Keeping track of choices with GET params.
Allowing only the enabled featurelines to be used as cql filters.
Renamed cql filter variables to make intent more clear
turning cql filters into a list again.
Tweaking the wms layers on the way out