Migrate Business Templates from fileSystem to Zodb

BT5 migrated to portal_components:
 - slapos_accounting
 - slapos_cloud
 - slapos_configurator
 - slapos_crm
 - slapos_erp5
 - slapos_hypermedia
 - slapos_payzen
 - slapos_pdm
 - slapos_rest_api
 - slapos_slap_tool
 - slapos_upgrader
 - slapos_web
Update Skin list in testSlapOSERP5SkinSelection
runTestSuite also search tests files in portal_components folder
Delete old tests scripts (slapos_crm)
Fix module import error in testSlapOSERP5DefaultScenario.py
testSlapOSCRMSkins: Add default email to person
Remove duplicated test
testSlapOSCloudConstraint: Update consistency_message
Fix test module import error
Fixup: delete previous certificates files before running unit tests
fix test check_Instance_validate
fixup: is_livetest
slapos_accounting: Update tests scripts and fix module import
Slapos_accounting: Add Invoice Line to hidden content types
Web Message template: Set default content_type value
fix: Force tests in testSlapOSHypermediaSkins to be run in first position
Specify portal_type to avoid getting wrong getCausalityRelatedValue
revert: Specify portal_type to avoid getting wrong getCausalityRelatedValue
test_paid_payment: fix assertion
Slapos_accounting: Always create income, receivable and collected_vat in init script