Edited Issue: Model-First doesn't support creating tables with timestamps [1122]

We could at least recognize that that a binary property with fixed length 16, fixed concurrency mode and identity store generated pattern should produce a timestamp column when generating a SQL Server-based SSDL and DDL.

This is also tracked in [a UserVoice item](http://data.uservoice.com/forums/72025-entity-framework-feature-suggestions/suggestions/1503465-support-for-timestamp-in-model-first).