Enable CreateLeBailFit and LeBailFit to use self-generated list of Bragg peaks

[wdzhou]

This ticket is blocks : TRAC7880

Powgen run PG3_15038 is the measurement on NAC. It is found that several Mantid algorithms should be improved to work with this case. The tasks include

1. Enable CreateLeBailFitInput to generate a list of reflections. The user can have another choice to have the list miller indexes in addition to reading a Fullprof .irf file.
2. Make LeBailFit takes a limited number of Bragg peaks from table workspace by specifying the range in TOF.

== Reduce scope of goal ==
The goal of this ticket is reduced because it is found that the current LeBailFit algorithm has some difficult to refine the parameters for NAC due the reasons more than lacking of Fullprof .hkl file.

Those issues will be dealt in other tickets (http://trac.mantidproject.org/mantid/ticket/7899 and http://trac.mantidproject.org/mantid/ticket/7900)

[wdzhou]

This issue was originally trac ticket 7847

[wdzhou]

http://trac.mantidproject.org/mantid/raw-attachment/ticket/7847/PG3_15038-4.dat
(uploaded by @wdzhou on 2013-09-10T18:03:01)

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http://trac.mantidproject.org/mantid/raw-attachment/ticket/7847/test2013B_b4.irf
(uploaded by @wdzhou on 2013-09-10T18:03:10)

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http://trac.mantidproject.org/mantid/raw-attachment/ticket/7847/verify7847a.py
(uploaded by @wdzhou on 2013-09-10T19:10:24)

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http://trac.mantidproject.org/mantid/raw-attachment/ticket/7847/verify7847b.py
(uploaded by @wdzhou on 2013-09-10T19:10:33)

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http://trac.mantidproject.org/mantid/raw-attachment/ticket/7847/verify7847c.py
(uploaded by @wdzhou on 2013-09-10T19:10:42)

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