Improve use of polymorphism in the Axis classes

[mantid-builder]

This issue was originally TRAC 2508

Original Reporter: Russell Taylor

Theres a lot of if spectra, else if numeric, else if..... going on.
We should make better use of virtual methods.

[mantid-builder]

@NickDraper (2011-04-27T07:36:03):
Bulk move of tickets at the end of iteration 28

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@NickDraper (2011-06-27T08:20:27):
"New" tickets moved at the code freeze of iteration 29

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@NickDraper (2011-09-19T09:30:57):
Bulk move of tickets to iteration 31 at the iteration 30 code freeze

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@NickDraper (2012-01-09T09:43:35):
Moved to iteration 33 at iteration 32 code freeze

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@NickDraper (2012-04-30T14:14:34):
Moved at end of release 2.1

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@NickDraper (2012-08-10T12:45:03):
http://www.mantidproject.org/Release_Notes_2_2_Full_List

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@NickDraper (2012-10-28T11:39:18):
Moved to milestone 2.4

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@NickDraper (2013-01-28T09:23:25):
Moved at the code freeze for release 2.4

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@NickDraper (2013-04-29T09:50:02):
Moved to r2.6 at the end of r2.5

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@NickDraper (2013-07-26T13:55:02):
Moved to backlog at the code freeze for R2.6

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@NickDraper (2014-02-14T11:07:56):
bulk move to assigned at the into of the triage step

[NickDraper]

Not an area for refactoring at the moment - archived