The [cmake documentation of `CXX_STANDARD_REQUIRED`](https://cmake.org/cmake/help/v3.5/prop_tgt/CXX_STANDARD_REQUIRED.html)
demonstrate that this was previously incorrectly set. This forces the
compiler flag to be specified. In the case of gcc 4.8 it sets
`-std=c++1y`. Newer gcc (since version 5) will sets `-std=c++14`.

The TSC decided to move to devtoolset-7 on rhel7 to allow for C++14
standard code in mantid.

The Windows dependencies need downloading before Eigen is configured

22811 instrument specific profile fitting

Indirect - Unit Tests - Ensure all Indirect Unit Tests run at non-ISIS facilities

Fix making a package using homebrew LLVM

Use system eigen and xmlrunner on Windows

chudley-elliot fit function should contain hbar

Progress indicator works correctly for errors and exec

Muon - Reorganising folder structure

Only sleep after doctests if free memory is below 75%

Add tolerance to direct beam sorter

A few changes to support msvc 2017

Pressing Cancel when Closing Workbench

MSVC 2017 15.7 contains a bug where constant initialization no longer
takes place for objects with constructors marked constexpr such as
once_flag. This leaves once_flag susceptible to dynamic initialization
order problems and causes some singleton instances to be constructed
incorrectly. We put back our correct implementation (with some cleanup)
and await a fix from MS.
Refs #0

Caught exception in ICat

Disable file logging & simplfy log filtering

PlotSelector Widget additional features

This avoids a bug when saving which sets the file name for the wrong tab, and makes it clearer what you are being asked to save.