Introduce additional performance test

Make findNeighbours use findNeighboursByWidth

Remove init code. All vertex touching calculations go through the cache now

Cache the permutation info by width.

Can now find neighbours via a specified width. Unit tests introduced.

Currently the MDHistoIterator can only give me a fixed-size neighbour map in a 3 by n block. Smooth demands that we can make the size of this block variable. Otherwise WidthVector will not be used.

MSDFit Python algorithm

MD coordinate as separate field

Test for running validateInputs in Python

Concepts file names normalised

Find_path for OPENCASCADE_LIBRARY_DIR

Both release and debug builds show no problems in Fedora20

Re #11374 Add system test for REFL

Setting a more proper tolerance

On Windows they are in a non-standard location so must be explicitly
included.
Refs #11359

Added interpolation and detector map copy to FlatPlatePaalmanPingsCorrection

DataSelector only emit dataReady signal when data changed

This should help with eliminating random failures when running the tests
in parallel.
Refs #11306

Refs #11306

This should never need to be called but just in case...
Refs #11306

Everything works as described. I have created a ticket to use the algorithm in PoldiFitPeaks2D ([#11384](http://trac.mantidproject.org/mantid/ticket/11384)) where it will be quite helpful.

Refs #11359

IDA CalcCor UI issues

Refs #11097

Refs #11377

This used to be done by copying the experiment info but is handled
separately now that the coordinate is an extra field.
Refs #11359

Allow tuple syntax for bins in CutMD

Remove files saved by indirect system tests

Update axis title after workspace gets updated.