[Muon] Temperature and field home display

[Anders-Markvardsen]

This ticket is blocks : TRAC7179

In the home panel in 'Run information' at the bottom display also the value recorded in the nexus field and temperature entries, if these are available in the nexus file.

In the nexus file these should be available from

run\sample\temperature

run\sample\magnetic_field

As a first step to complete this ticket check if this information gets loaded up loading muon nexus files. If not have this done, and update the wiki http://www.mantidproject.org/Run#ISIS_Muon_data accordingly.

Then in MuonAnalysis use code like:

const Run& runDetails = matrix_workspace->run();
std::string runNumber = runDetails.getProperty("run_number")->value();

[Anders-Markvardsen]

This issue was originally trac ticket 7178