Check loan is still valid when updating lending limit.

Update state to Incomplete and redirect to loan entry if not.
EFG not SFLG
Remove 'overdraft' from question text
Update question text
Update question text
New question text
Merge pull request #226 from alphagov/phase-6-update-lending-limit

Ensure that the loan is still valid when changing its lending limit
It's much easier to switch branches if we can revert database changes.
Minor tweak

That sentence needs removing and rewriting completely.
Merge pull request #228 from alphagov/misc-text-changes

Misc text changes
Add Phase 6 state aid letter.

Includes updates to pre-Phase 6 State Aid Letter
to make both letters more consistent.
We'll have these values by the time the state aid letter is viewed.