(/=) move interface to tableConnection into separate interface

(+) Static physical interface dummy implementation
(+) Some utilities to serialize objects
Merge branch 'alternatePhysicalInterface'

Conflicts:
	src/ch/ethz/inf/dbproject/sqlRevisited/Codegen/SQLOperatorBase.java
	src/ch/ethz/inf/dbproject/sqlRevisited/Serializer.java
(/=) Conflict resolution