Exclude post claim limit loan realisations from the claim limit
calculations.
Add a data migration to correct the phase for 2 lending limits.
Merge pull request #254 from alphagov/exclude-post-claim-realisations-from-claim-limit-calculations

Exclude Post Claim Realisations from Claim Limit Calculations
Merge commit 'f1b8a8001ab2c3adfe854889c28fa62cff3f2b43' into HEAD