Colormap selection should be clearer

[peterfpeterson]

This issue was originally TRAC 3479

Rather than making users dig around for a different color map that they want to use, make the list of color maps a selection from ones that mantid found. For clarity you may want the dialog have the directory (with absolute path) where it expects the color maps to be.

[peterfpeterson]

@NickDraper (2011-09-19T09:31:03):
Bulk move of tickets to iteration 31 at the iteration 30 code freeze

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@NickDraper (2012-01-09T09:43:44):
Moved to iteration 33 at iteration 32 code freeze

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@NickDraper (2012-04-30T14:15:13):
Moved at end of release 2.1

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@NickDraper (2012-08-10T12:45:07):
http://www.mantidproject.org/Release_Notes_2_2_Full_List

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@NickDraper (2012-10-28T11:39:22):
Moved to milestone 2.4

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@NickDraper (2013-01-28T09:23:27):
Moved at the code freeze for release 2.4

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

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@NickDraper (2013-07-26T13:59:09):
Moved to the Backlog after 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]

very old and ignored - archive