OFX imports: Remove restriction about account types

...but still update imported Credit Card account type to Liability

imports.go

@@ -66,13 +66,6 @@ func ofxImportHelper(r io.Reader, w http.ResponseWriter, user *User, accountid i
 		return
 	}
 
-	if account.Type != importedAccount.Type {
-		sqltransaction.Rollback()
-		WriteError(w, 3 /*Invalid Request*/)
-		log.Printf("Expected %s account, found %s in OFX file", account.Type.String(), importedAccount.Type.String())
-		return
-	}
-
 	// Find matching existing securities or create new ones for those
 	// referenced by the OFX import. Also create a map from placeholder import
 	// SecurityIds to the actual SecurityIDs

ofx.go

@@ -137,7 +137,7 @@ func (i *OFXImport) importOFXCC(stmt *ofxgo.CCStatementResponse) error {
 		ExternalAccountId: stmt.CCAcctFrom.AcctID.String(),
 		SecurityId:        security.SecurityId,
 		ParentAccountId:   -1,
-		Type:              Bank,
+		Type:              Liability,
 	}
 	i.Accounts = append(i.Accounts, account)