Mooring Hire Bug Fixes

[xzzy]

This change is 

[coveralls]

Pull Request Test Coverage Report for Build 718

• 57 of 138 (41.3%) changed or added relevant lines in 11 files are covered.
• 276 unchanged lines in 11 files lost coverage.
• Overall coverage decreased (-0.6%) to 36.407%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
mooring/models.py	6	8	75.0%
mooring/reports.py	1	19	5.26%
mooring/views.py	1	30	3.33%
mooring/api.py	16	48	33.33%

Files with Coverage Reduction	New Missed Lines	%
mooring/reports.py	1	7.78%
ledger/payments/helpers.py	1	70.0%
parkstay/utils.py	1	48.58%
parkstay/emails.py	2	31.25%
ledger/payments/mixins.py	5	53.85%
ledger/payments/invoice/models.py	5	50.43%
parkstay/models.py	6	54.0%
mooring/views.py	11	22.58%
ledger/emails/emails.py	24	30.91%
ledger/payments/pdf.py	67	67.43%

Totals
Change from base Build 715:	-0.6%
Covered Lines:	16924
Relevant Lines:	46486

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💛 - Coveralls

[wilsonc86]

Reviewed 33 of 33 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved