Removes looping and machine changes from 1.0.3 schema

They should only be on schema 1.0.4

db/versions/v1_0_3/specs/all.xml:
* Machine object moved back to log object
* Removed LOOP_ITERATION

db/versions/v1_0_3/domain/auto_gen.py
db/versions/v1_0_3/persistence/sql/auto_gen.py
db/versions/v1_0_3/persistence/xml/auto_gen.py
db/versions/v1_0_3/schemas/sql/vistrails.sql
db/versions/v1_0_3/schemas/sql/vistrails_drop.sql
db/versions/v1_0_3/schemas/xml/log.xsd

Ticket: 894