Fixed the indentation of the ApplyDeadTimeCorr code.

Refs #7229
Code clean-up regarding usage of a namespace.

Refs #7229
Methods for applying dead time correction.

Refs #7229
New algorithm to group detectors using info from Muon Nexus.

Refs #7229
Make the algorithm retrieve workspaces from a group, not from ADS.

Otherwise I couldn't use child algorithm to modify workspace before
it gets used.

Refs #7229
Use the new algorithm to apply auto-grouping.

It means I can apply dead time correction before grouping happens.

Refs #7229
Improve tests a bit.

Refs #7229
Make grouping functions to return output workspaces.

Refs #7229
Code to apply dead time correction.

Is passing the tests.

Refs #7229
Moved all DTC applying code to functions.

Refs 7229