re #8120

Categories were not being hidden when a parent category was hidden. Now,
categories are hidden whenever either the category itself, or one of its
parents is set as hidden.

Refs #9515

It provides easy access to the highest version of an algorithm
currently registered.
Refs #9521

Refs #9059

There were a couple of rather major bugs which it's a wonder hadn't been found until now.

The first was that decodeName() could go out the range of the string and return garbage if there wasn't a bar cahracter in the supplied string. A check has been added which will throw an exception if one isn't found.

The second was that getCategories() didn't work at all as the loop wasn't executing due to the variable "it_end" used in the condition not being initialised correctly. It's now initialised correctly to categoryMap.end().

Refs #3344

It was previously not updating the version map when the algorithm was
removed and then subscribing the same thing again would throw an error.
Refs #7263

This allows the algorithm dock in MantidPlot to update when
the algorithm factory is changed. RegistrationHelper has been moved to
its own class to remove the dependency of Parameter.h on DynamicFactory.

This now doesn't require a user to understand the internal
mangling of the algorithm names in order to unsubscribe/replace
and algorithm in the factory.

Fixed problem with configservice not saving new entries.  Also dealt with mantid dock issue on delete 

Adds the option to select which algorithm categories are available into the Mantid->options tab of the preferences window.

Known Bug:  Does not work with nested categories at the moment, but right now the only one is DataHandling, and you'd be a fool to hide that.

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

Multiple categories are now correctly displayed in Mantidplot.
Hiding of categories is implemented for Mantidplot, but no GUI to select yet.
hidden categories can be set in the properties files with algorithms.categories.hidden

Cleaning up the algorithm version number handling in Python now that we have a new mantidsimple. The existence of a version 1 is no longer a requirement. Re #1591

Fixes #1591. Included information about properties that don't exist in all versions of an algorithm in the Python help. Also added some helper functions to the AlgorithmFactory to make this eaiser.

Rename Framework code directory to just that. Also delete Main and VS & Eclipse project file. Re #1881.

Greatly improved error handling for Python algorithms.
Moved Mantid initialization in MantidPlot to before scripting initilzation so that useful log messages get displayed. Re #952

Added validation to Python algorithms. Improved handling of Python cloned python references that were not being cleaned up. Re #952

Major backbone of Python algorithms. Changing and reloading while running MantidPlot is now implemented. Re #952

Avoid crash of MantidPlot if the same algorithm occurs twice (e.g. in UserAlgorithms and Algorithms. Also move connection of log window to signalchannel earlier so that the error is shown on startup. Re #1089.

Remove the annoying "multiple assignment operator" warning that MSVS gave for WorkspaceProperty. Delete inclusion of Workspace2D header in MantidPlot. Re #100.

crusade against the usage of cout and cerr in the framework code

AlgorithmProxy class is added. References to Algorithm are replaced to IAlgorithm in many cases. re #464

Refs #207. Added initial code for creating an instance of a algorithm in python then having access from it in Mantid.

A dockable widget for viewing algorithms is added to QtiPlot.

Massive Doxygen cleanup, still more to do though