Refs #2245: Templated the integrate() function in EventList. Renamed TofEventTest suite to EventsTest

Enabling keep_pixels option in CPR

adjustments to python calls in Indirect CTE interface sqw tab, which would on occassion cause errors that weren't handled by the interface or visible to the user. fixes #2243

re #2240 - removed custom login dialog.Masked property check is added to generic dialog to display asterisks instead of the characters.

Fix a bug with the inelastic GUI for absolute units which wasn't setting the integration region correctly. Fix a bug with the scripts if they were passed two ints for the sample and rmm mass that would divide to zero giving NANs in the data. Re #2237

Eliminate constructor from ApplyTransmissionCorrectionTest. It still loads data and is very slow, which should be fixed sometime. Re #2221.

Edit FileFinderTest to prevent constructor & destructor being called when running other tests. Re #1881.

Refs #1755 new function to avoid repeating calls to move detectors in DiffractionEventCalibrateDetectors

The output directory is given as a text box and workspaces with only one entry don't have the period number in their name refs #2145 and #2146

Added mantidqt.python_interfaces_directory as one of the Mantid properties that needs to be transformed from relative to absolute. Re #1881