First go at a Land Registry preview
Example dashboard for land_registry (uses stub data)
Calculate total weeks based on first and last event
Only when both start and done are missing, treat as missing data

Otherwise, if one is present and zero, data is available and should plot
data in the graph.
@wip mostly working completion for lpa

need to make less fco specific
need shorter controller
need more js tests?
Remove unused functions
Remove duplication when creating volumetric series
Merge branch 'master' into fix-missing-journey-data
Merge branch 'fix-missing-journey-data' into lpa-completion-rate
Useful lpa journey testing data
Specs to test more configureable volumetrics

need to move to common
14 failures - must fix
Moving methods into volumetrics collections
@wip specs for configureable volumetrics

must fix for end to end
All working end to end

fix features for actual values,
move common modules
json with more start and end data points

need to add real final stage and fix features
Merge pull request #217 from alphagov/fix-missing-journey-data

Fix missing journey data
Passing features, extract out lpa volumetrics
Move common files to extensions
Move the number above the graph for fit small/mobile screen
Decrease impact number font only under 500px.