change level pricing in member signup processor
Update test for opportunity creation in capsulecrm
Save the right thing when saving custom field on opportunity

Not sure how this didn't show up before
Remove member level handling

Retain member in product list for reporting.
Merge branch 'refs/heads/master' into 339-membership-pricing
Merge branch 'refs/heads/master' into 339-membership-pricing

Conflicts:
	fixtures/vcr_cassettes/Create_opportunities_and_tags_against_organisations_in_CapsuleCRM/attach_opportunities_to_existing_organisations.yml
	fixtures/vcr_cassettes/Create_opportunities_and_tags_against_organisations_in_CapsuleCRM/attach_opportunities_to_existing_organisations/_supporter_60_.yml
Merge pull request #340 from theodi/339-membership-pricing

Update membership pricing