bt5_prototype: Add export functions for PathTempalteItem and BusinessPackage as well as make createInstallationData more efficient

Problem:
This is a workaround for components being unable to get registered during
the tests.

Explanation:
After adding document component object, _p_oid is generated at the
last step of commit hook. This leads to problem that _registry_dict for
dynamic_class 'erp5.component.document' isn't getting updated with
the _p_oid of the component created.
This leads to failing of test because to validate object with same
reference, the checkConsistency function checks in the _registry_dict
for reference and _p_oid.

Solution:
Explicilty calling transaction.savepoint here generates the oid before validation, hence
make it available for the registry_dict in time.

But, this clearly is a workaround which is clearly not solving the real
problem of why the _p_oid isn't being generated at the right step.

And, Patch changeObjectClass extension to remove useless attributes

Copying __dict__ from one object to another brings us to situation where
we don't have many objects which we don't need at all, for example, migrating
objects with subclasses who were initially OFS objects and later an ERP5
object can lead to adding subobjects as attributes of the new object, which
is completely undesirable. To handle this, it is important to delete the
sub-objects as the attributes for those migrated classes.

Old Catalog Tool didn't have portal_type attribute, so while migrating
via synchronizeDynamicModule, after _bootstrap, we expect the tool to
have a portal_type to finalize migration.

This step is now being done only at the end of _bootstrap after we
change the classes for portal_catalog and its sub-objects.

- This step is needed due to the use of BaseTool as Base class for CatalogTool
  due to which there were conflict between reindexObject from the Base and the one
  from the BaseTool.

ERP5CatalogTool class inherits from BaseTool.

Significant addition/changes in:
-------------------------------
  ERP5CatalogTool:
    Add functions _isBootstrapRequired and _bootstrap
    Explicilty add manage option tabs in Catalog Tool

  BusinessTemplate:
    Update BusinessTemplate installation according to changes made in ERP5Catalog and Tool

  testCopySupport:
    Its better to change the tests where they need to call getpath function of
    portal_catalog to use portal_catalog.getpath instead of portal_catalog.getPath,
    as we have overridden the 'getPath' function for CatalogTool class due to change
    in inheritence.

  ERP5Site:
    Create portal_catalog while setting up erp5site

Move from SQLCatalog to ERP5Catalog as the default Catalog inside ERP5.
The major difference is use of Products.ERP5Type.Core.Folder as Catalog
base class.

Significant addition/changes in
-------------------------------

  ERP5Catalog class:
    Inherit from Catalog class from Products.ZSQLCatalog.SQLCatalog instead of copy-pasting the whole code again.
    Monkey patch some property setters and getters to maintain consistency
    Override getCatalogMethodIds cause it uses global variable in SQLCatalog.Catalog
    Add FilterDict and Filter class to have consistency with `filter_dict` attribute of SQLCatalog

  BusinessTemplate:
    Update BusinessTemplate installation with updated filter_dict
    Also, use dynamic migration while installing the catalog method objects for
    bt5. This way we have SQL Methods migrated just after installation.

  Tests:
    Update tests according to changes in portal_catalog

  SQLCatalog, testZSQLCatalog:
    Cleanup for unusable functions

Create the SQLMethod class based on ZSQLMethods.SQL
class and XMLObject.