erp5_catalog_transition: Add select_variable property in standard property in Catalog property sheets

Now as CatalogTool is a ERP5 object(BaseTool), we need CatalogTool.getPath
to direct to getPath function from Base class, so the best way was to change
the tests where it relied on CatalogTool.getPath to call getpath from ZSQLCatalog.

erp5_catalog: Revert back to monkeypatch getPath with getpath in ZSQLCatalog and solve inhertiance conflict for CatalogTool

erp5_catalog: Update select_variable and type for Catalog and CatalogTool property_sheets objects respectively

erp5_catalog: Makes better sense to have bt5 in bootstrap as it'd be installed during ERP5Site setup

erp5_catalog: Ignore case for title property and update default_erp5_catalog_id only when we create new erp5_catalog

erp5_catalog: Use searchFolder as list method as we have catalog objects as content which are ERP5 object

erp5_catalog: Install erp5_catalog_transition bt before erp5_catalog_storage as we need Catalog portal type early on