fix #330 and #342.  Add Soft Credit Last N Days support, and correctly filter out account type, account record type, and non-individual accounts from Soft Credit rollups.
fix #330 and #342.  Add Soft Credit Last N Days support, and correctly filter out account type, account record type, and non-individual accounts from Soft Credit rollups.

InspectorSpacetime/Cumulus,abeyer/Cumulus,cdcarter/Cumulus,Zosoled/Cumulus,Zosoled/Cumulus,jlantz/Cumulus,abeyer/Cumulus,ehrenfoss/Cumulus,jlantz/Cumulus,cdcarter/Cumulus,jarkos88/Cumulus1,BillFlorioSFDC/Cumulus,InspectorSpacetime/Cumulus,abeyer/Cumulus,SalesforceFoundation/Cumulus,InspectorSpacetime/Cumulus,SalesforceFoundation/Cumulus,cdcarter/Cumulus,jlantz/Cumulus,cdcarter/Cumulus,ehrenfoss/Cumulus,InspectorSpacetime/Cumulus,abeyer/Cumulus,BillFlorioSFDC/Cumulus,ehrenfoss/Cumulus,cyberjus/Cumulus,Zosoled/Cumulus,BillFlorioSFDC/Cumulus,jarkos88/Cumulus1,SalesforceFoundation/Cumulus,BillFlorioSFDC/Cumulus,cyberjus/Cumulus,jlantz/Cumulus,jarkos88/Cumulus1,SalesforceFoundation/Cumulus,cyberjus/Cumulus,Zosoled/Cumulus,cyberjus/Cumulus