Refs #5421 Adding skeleton code for Indirect Bayes.
Created Indirect Bayes window and ResNorm tab.

This commit also lays most of the ground work for the rest of the tabs.

Refs #5421
Refs #5421 Adding interface for Quasi.
Refs #5421 Adding Stretch interface.
Refs #5421 Created JumpFit interface.

Also refactored tabs to remove duplicate members.
Refs #5421 Minor tweaks across the Bayes interface.
Refs #5421 Updates to Indirect Bayes for QLines.
Refs #5421 Hooked up ResNorm to underlying python script.

This includes setting up the supporting code for the rest of
the Bayes interface.
Refs #5421 Adding proper file filtering for ResNorm.
Refs #5421 Added support for showing a message box to user.

Also properly documented the ResNorm code.
Refs #5421 Added plotting of energy range and validation for it.
Refs #5421 More documentation and refactoring.
Refs #5421 Further refactoring.
Refs #5421 Starting Quasi implementation.
Refs #5421 Linked Quasi GUI code with python script.
Refs #5421 Stretch interface now connected to Quest routine.
Refs #5421 Setting upper limits for Sigma/Beta in Stretch.
Refs #5421 Minor tweaks to get the GUI working with the scripts.
Merge branch 'feature/5421_IDA_bayes_interface' of github.com:mantidproject/mantid into feature/5421_IDA_bayes_interface
Refs #5421 Added multiple plot option to ResNorm.

Also updated plot to use +/- resolution * 10