refs #1197

Crashes happened when after converting units x-values of monitors went to infinity. Now ConvertUnits checks the x-values and skip them if they are infinite or NaN. fixes #1194

For the SANS Python scripts fill some in some instrument defaults that will allow batch processing of input files re #1190

Fix crash when idlist is missing.
Update http://www.mantidproject.org/InstrumentDefinitionFile documentation...

Refs #1179.

Correction to Mantid Python startup files so that they don't overwrite Python double-underscore variables. Re #1188

ManditUI's replace workspace notification handler used to fire a signal and pass the LoadDAE algorithm pointer as a parameter. By the time the signal is caught the algorithm is already destroyed. Now the handler passes the output workspace name instead. re #1187

MantidCurve did not recalculate its bonding rectangle after replacing the workspace. Also improved handling of 2D graphs in cases there are NaNs or infinities in the x-values. re #1110

certain tracks do not intercept. Re #1102

Kernel build runs the release_version.py script as a pre-build step.
Main copies the executable into release/debug directory as appropriate.
Re #1169.

Enabled a fixed width font for the immediate window so that formatting of mantid help is not affected. Re #1036

This crash appears to come from the logging. Reduce the amount of logging when masked detectors are added to a group. Re #1174.

Converted libISISGetEi to version 2 of GetEi and removed selection box from Homer interface. Re #1163

A temporary simple way to save and retrieve sample width, height ... in processed nexus files re #1166