Import qtiplot's functionality for adding shapes to plots

[mantid-builder]

This issue was originally TRAC 5291

Original Reporter: Russell Taylor

It's in QtiPlot's AddWidgetTool class (called from methods/shortcuts in ApplicationWindow).
Allows adding rectangles & ellipses/circles (& equations) to plots.

[mantid-builder]

@NickDraper (2012-08-10T12:45:15):
http://www.mantidproject.org/Release_Notes_2_2_Full_List

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@NickDraper (2012-10-28T11:42:55):
Moved to release 2.4

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@NickDraper (2013-01-28T09:23:34):
Moved at the code freeze for release 2.4

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Russell Taylor (2013-04-16T20:55:32):
Move the tickets I'm definitely not going to do this iteration so that I can better see the ones that I might.

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@NickDraper (2013-07-26T13:59:11):
Moved to the Backlog after the code freeze for R2.6

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@NickDraper (2014-02-14T11:07:57):
bulk move to assigned at the into of the triage step

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Russell Taylor (2014-06-16T19:08:53):
Orphaning tickets that I won't have time to look at.

[NickDraper]

not really asked for by inst scientists - archived