Summary:

Support for SUPER ADMIN role: Super admin user will reference a seeded
seller info(SLR_SELLER) with id=-1;

Reason: Super admin can reference more than one seller info so we store
that info in XREF:SLR_USER_SELLER_XREF

Added the following table which stores relationship of userprofile vs
seller info as many-to-many relationship.
Merge branch 'master' of https://github.com/IHmantra/ihm.git