Cleared error due to a / in the wrong direction

Improveed handling if properties file missing.
Changed VS build to use dynamic loading

Improved windows running of datahandling tests

re #58

Algorithm::store changed to allow multiple out and multiple inout workspaces to be saved in the ADS, 
instead of breaking after a true result the loop continues.

history structure is built up according to the plan, with a history for one object containing all the 
constituent history processes on other workspaces

re #58

Extended iterator and workspaces to include E2 values.

This has resulted in a further 20% slowdown on iterator speed.
Benchmark now 1.4s

Added test and fixed scope issue

Calculation now performed through the errorHelper class

All errorhelper classes are currently defaulted to Gaussian in the Workspace class

triple_iterator now uses const_iterators underneath and holds a const pointer to its workspace when it is used a const_iterator. Hence the workspace data is accessed via the const methods. You can now use const workspaces with the iterators, but there's still an issue with using the getProperty() method to assign to a const workspace. It boils down to there being no AnalysisDataService::addOrReplace method that takes a const workspace. Re #86.

missed adding a file

removed extra qualification!

Altered Plus, Minus, Multiply and Divide to inherit from BinaryOperation and CommutativeBinaryOperation.  BinaryOpHelper has been removed.
Triple Iterator can now loop iterate in both orientations (although this has imposed a small (<10%) performance hit.
The operations can now add heterogenous workspaces in both orientations.

build fixed

build fixed

This should even be possible (This is now tested!)
Worskspace_sptr wsResult = (ws1+ws2)/(ws1-ws2);

Added some missing files

Added operator overloads so that now you can perform workspace +,-,*,/
operations within algoriths using the following syntax.

Worskspace_sptr wsResult = ws1+ws2;
This should even be possible (untested)
Worskspace_sptr wsResult = (ws1+ws2)/(ws1-ws2);

removed compiler warnings in gcc

+,-,* and / can now take heterogenous workspaces as input