Could still use a test, though we're lax in python tests!

for MDHistoWorkspaces to python. Tested in VanillaPythonTest.

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git commit -a -m Refs

Refs #4085, refs #4089, REfs #4083. Added tests for workspace groups in binary operations.
The +-*/ operations are all overloaded and tested for matrix, group, and MD types.

Refs #3907: Made MDEventWorkspace inherit from IMDWorkspace. Added tests to MDGeometryTest. Clarified the getDimension() calls, which were ambiguous.

Refs #3724: Exposed a method to python to allow looking at the deprecation message of deprecated algos. Wiki maker script uses that to make a redirect page.

Fix the property declarations and export WorkspaceProperty<WorkspaceGroup> to Python so that the auto complete can pick it up correctly. Fixes #3879

Continue obsession with const: ExperimentInfo(MatrixWorkspace)::getInstrument now returns a const instrument. Re #1944.

Export the access functions for the oriented lattice from the sample class. Fixes #3680. Also cleared some warnings on windows. Refs #3302

added python bindings

Try to get system tests passing. This includes temporary renaming of a method on Instrument. Re #1944.

Add a copy constructor to Instrument. Oh, and go on a const-correctness hunt that led this commit to touch slightly more than just the one class. Re #1944.

Add the exports for ISpectrum so that when a user has created a workspace with CreateWorkspace they can set up the necessary spectrum/detector links if the default is not right. Refs #3381

- Refs #3203: Implemented ISpectrum. It is the base class of EventList and Histogram and contains the spectrum number and list of detector IDs for a given spectrum.
- ISpectrum return X/Y/E vectors. EventList, e.g. calculates the histogram on the fly.
- Moved the EventWorkspace MRU list of histograms to be contained within the EventList; better code separation. Made a EventWorkspaceMRU class to encapsulate this more easily.
- Workspaces must implement getSpectrum (const/not const) to return a ISpectrum object. dataX(i), etc. methods on MatrixWorkspaces no longer need to be overridden since they call getSpectrum()
- Got rid of EventWorkspace::getEventListatPixelID() and doneLoadingData()
- replaceSpectraMap() methods offers backwards-compatibility with SpectraDetectorMaps by setting the specNo and detector list when called. Must be called AFTER creating all the spectra in a workspace.
- Refs #3318: maskWorkspaceIndex() implemented as part of ISpectrum.

Python supports multiple categories, no work really as python does not realy support categories any more.

refs #2128
Python and the mantidplot UI respects not showing algorithms if all of it's categories are hidden 

tests:
                  Normally  Hidden   What I want
in tree           Yes       No        No
in search box     Yes       No        No
typed in box      Yes       Yes       Ideally, but not too fussed
mtdHelp           Yes       No        No
intellisense      Yes       Yes       No, but not too fussed
typed in script   Yes       Yes       Yes

Final cleanup of mantidsimple. mantidsimple.py is no longer generated at runtime but sits with MantidFramework.py Re #2663

Refs #2897. Actually give toString a default so that it makes sense in most situations. This will fix the Python test failure.

Ensure that when algorithms are run using the simple API as part of a Python algorithm that they are unmanaged. If they are not then they can cause the main algorithm to be deleted before it is actaully finished./unmanaged_alg.py  Refs #1459

Refs #2930. Fix the LoadDialog python command which had stopped working and simplify the whole thing regarding the generating mantidsimple. Now it simply generates all of the functions, there is no longer a gui flag. At runtime it checks whether it can use them or not.