Added new widget and connected it to Fury interface.

Refs #7681
Replacing check for valid res file.

Refs #7681
Merge remote-tracking branch 'origin/master' into feature/7681_new_mantid_widget
Delete CompareADARAtoLegacy.py
Merge remote-tracking branch 'origin/feature/7688_Reorganise_ICAT_directory_structure'
Added check to stop auto plotting when workspace selector not visible

Refs #7681
Merge remote-tracking branch 'origin/feature/7669_remove_plot_input_btns'
Merge remote-tracking branch 'origin/master' into feature/7681_new_mantid_widget
Merge branch 'feature/7681_new_mantid_widget' into develop