Consolidate reflectometry reduction code

[mdoucet]

This issue was originally TRAC 7242

This ticket is blocked by :

• TRAC6577
• TRAC7240

Parts of the ORNL reduction code for reflectometry is in LargeScaleStructure, and parts of it in scripts/reduction.

Since the reduction infrastructure in scripts/reduction uses the old python API, we should move the reflectometry code from that directory and put it with the rest of the code in LargeScaleStructure.

This can only be done once the reflectometry reduction and UI code has been moved to the python API v2 (tickets http://trac.mantidproject.org/mantid/ticket/7240 and http://trac.mantidproject.org/mantid/ticket/6577).

[mdoucet]

@NickDraper (2014-02-02T15:34:48):
Moved to backlog at the end of Release 3.1

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@NickDraper (2014-02-14T11:04:59):
Bulk move to assigned at the introduction of the triage step