Fix SANS SaveWorkspaces problem, the signal in the base MantidDialog was being obscured by SaveWindow's redeclaration re #1747

Fix a small bug when saving a user properties file that contains line continuation characters. Fixes #1935

Revert parametrized components to store a simple pointer to the parameter map to avoid excessive copying when the workspace copy mutates in an algorithm such as LoadDetectorInfo. Alog with this the excitations conversion script has been fixed so that it works with ISIS instruments. Also cleared a few warnings about no newlines. Re #1934 

Code for Allow nested <rot> when <offsets spherical="delta" /> set in IDF. New collection of tests when spherical="delta" plus other additional tests. re #1931

Add an ExtractMask algorithm to create a workspace that will be interpreted as one that simple shows which spectra are masked. The workspace created is compatible with the binary operations, in particular plus so that masking can be accumulated. Fixes #1902.

refs #1882 - remove ambiguous constructor from DirectoryValidator that is causing windows build failures

refs #1852 - adding convolution fitting tab onto the indirectdataanalysis user interface. also refs #1851 removing "initial settings" tab from same interface.