Correct to file has been extended to take a file that contains the correction factors to apply to each spectrum re #1675

Exclude MDDataObjects tests from being built as the library is not yet being built. At the same time enable the ICat tests as I assume the disabling of these was only supposed to be temporary. Re #1637.

Improve performance of SumSpectra. The hinderance was the spectra remapping using the remap function, this is extremely slow. Changed to clear then add the relevent detectors as it go along. This reduces the time for summing a whole MERLIN data set from ~100 secs to ~1sec! Re #1694

Refs #1664: Operators for the TimeSplitterType objects can combine splitters and filters. AND and OR operators complete, two more to go.

Fixes for sometimes misbehaving instrument switching in ConvertToEnergy interface along with fix for save paths in direct interface. 
Re #1692"

Fix for running ConvertUnits when Ei has already been set. Also small update to DirectEnergyConversion script to deal with save paths correctly. Re #1692

Move FunctionFactoryTest from API to CurveFitting because it implicitly depends on BoundaryConstraint. Re #1389.

Updated BinaryOperation to be mask aware, along with various other cleanups discovered along the way. Re #1687

Minor update to ConvertUnits and GetEi to ensure that if Ei already exists, then it is overwritten. Re #1684

re #1690 - adding new ManageCustomMenus dialog to the File menu in Mantid Plot, to replace the datasearch/defaultsave entries in the View->Preferences->Mantid->Directories window.

re#1289 - Fix for unit test failure.SaveCanSAS1DTest,WorkspaceGroupTest fixed. One of the tests of GroupWorkspacesTest is still failing for me,temporarily commented the test which failed.

re#1289 - Fix for unit test failure.Both files were counting the no.of group workspace name along with the group members.

re #1582.

re #1582.

re#1289 - group name is removed from workspace group vector in the Workspacegroup class and changed algorithms which uses group vectors and iterates over it.
After installing visual studio 2010, unit testing is not working for all categories of algorithms on my machine, some of the unit tests may break after this check-in.

Refs #1360: Function that returns the statistics on a TimeSeriesProperty<double> added. Also fixed indents in LoadNexusProcessed.

Refs #1588: Fixed an error in the DateAndTime::duration* code that caused incorrect sample log times.

Refs #1382 and #1588: added units to Property, and to code that loads sample logs and calculates proton charge.