Create WorkspaceGroups and allow them to operate with all algorithms

[Nick Draper]

Discuss with Nick.

The idea is to

• create a workspace group out of load raw when creating multiple period data
• Allow that workspace group to be used in Workspace Properties
• Catch the workspace group in the base algorithm class and spawn separate algorithms to process each member of the group. Note the process of handling the workspace group in the Algorithm class should be done in a virtual method to allow individual algorithms to override the behavior if required.
• Finally create a group of the output workspaces.

[Russell Taylor]

(In [2433]) Change multiperiod data file used in test for one with fewer logs. It took too long in debug mode otherwise. Re #544.

[Nick Draper]

Moved as part of iteration end

[Sofia Antony]

(In [2546]) re #544 Changes for WorkspaceGroups creation and processing

[Sofia Antony]

(In [2548]) re #544 changed to resolve build failure

[Sofia Antony]

(In [2553]) re #544 logging is changed from error message to information

[Sofia Antony]

(In [2564]) re #544 Changed for fixing the unit test failures and displaying correct error messages in log window

[Sofia Antony]

(In [2568]) re #544 Changed for adding the missing periods in load raw 3

[Sofia Antony]

(In [2573]) re #544 Changed for handling single period

[Stuart Campbell]

This ticket has been transferred to github issue ​1392